4L60E year differences and interchanges.

[CPT]

None of the '93 -'97 4L60E's are directly interchangeable, except '93 and '94 and '96 and '97!!! Here's a list of yearly differences that will show you why. Yes, some years will fit in others and may not even throw a code, but there will be an issue in the long run. The big issues become forced 3-2 downshifts, and converter lock up issues and burnt lock up clutches. When a converter cluych cause it to lose lock up, the 3-4 clutches, in the transmission will soon follow because the 3-4's need lock up to keep them cool while cruising in overdrive.

1993: These were used in TRUCKS only. Not available in F-Bodies, B-Bodies, or Vettes

1994: Interchangeable with '93 4L60E with no modifications. The '93-'94 is a NON PWM transmission. This means that the lock up apply strategy is an on /off arrangement. It has an 11 pin case connector. Does not have PWM cast into front pump. 1 piece TCC control valve in the valve body. Plate has holes in plate, marked in diagram below. 1st design 3-2 valve

1995: Stand alone year! Will not interchange with any other year. This is a PWM transmission. An extra solenoid was added to the valve body to control the pulsed lock up strategy of the conerter clutch. It has a 12 pin case connector, extra wire in the transmission to computer harness and different computer to control the new PWM circuit. Has PWM cast in front pump. Front pump internal passages different to match new TCC strategy. 2 piece TCC control valve in valve body. Has holes in plate, marked in diagram below. 1st design 3-2 valve. 12 pin case connector. '94 computer won't recognise new TCC strategy., and will burn lock-up clutch and 3-4 clutches up. '96 computer isn't compatible with '96 3-2 control solenoid.

1996: The 3-2 downshift strategy was changed to an on /off arrangement. The 3-2 downshift solenoid was changed to a 20-31 OHM solenoid, from the previous 10-15 OHM solenoid. The 3-2 control valve was changed to the second design valve. The easiest way to identify the valve is, the second design valve will fall out as soon as the solenoid is removed. The first design has a plug and retaining clip. TCC solenoid remains 10-15 OHMs, which is the same as the '95 arrangement. Has PWM stamped cast in pump. pump is the same as '95. Will not interchange with '95 unless changing 3-2 solenoid, valvebody casting, and seperator plate. Has holes in plate marked in diagram. '94 or '95 computer will not accept the 20-31 OHM 3-2 solenoid and will throw an SES light and throw the transmission into limp mode. Some less knowledgeable builders will swap the solenoid so the computer will see the correct resistance, but the valve itself then causes downshift issues. If only the solenoid is changed, it will result in a 3-2 downshift cut loose. In other words...3-neutral-2 downshift. Speedo moved to passenger side of tail housing, but easily changed.

1997: Basically the same as '96.

*** ADDITIONAL INFORMATION***. We have found that the '94 and '95 cars share the same part number for the PCM. This means that the PWM function is part of the tuning. It appears as though it's possible to install a '94 4L60E in a '95 vehicle as long as the PCM is reprogrammed to delete the PWM function. A '95 can be installed in a '94 as long as you add a wire into the trans harness that connects the PCM PWM pin to the transmissions PWM pin. The pin is pin 6 in connector d, the blue connector on the PCM, to pin U on the trans. This ia a brown wire on 95's.

[Sapper]

Frank, Excellent write up.

Any insight on a 24x conversion for those wanting to do it?

I did quite a bit of research and even made quite a few calls to my trans builder. (performabuilt)
What funny is that my car is a 94. It wasn't supposed to have a PWM. Well it did. Not sure which one due to Ohm differences, so I replaced the 3-2 and the PWM with the ones I know it's supposed to have utilizing the 0411 PCM.

My harness was set up for OBDI or II. It's a OBDII harness that had a 2nd pigtail spliced in for the different solenoids that would be used. Pretty smart I think. One harness does either.

During my research here at work (GM Dealer) I dug through all the old books and found that the solenoids between yrs was just simply a resistance value.

[CPT]

We've seen many cases where just changing the 3-2 solenoid to make the PCM see the right resistance, will cause forced downshift issues. The 3-2 valve in the valve body is a different design to work with the different solenoid. Are you saying Performabuilt built you the wrong year trans? I've never seen a '94 vehicle with a PWM unit. Was your original a PWM unit?
I know the 24X conversions need a '96-up transmission to work with the PCM.

Frank

[Sapper]

I'm sure my original didn't have one in it. But my new one from them had a solenoid in the PWM position. Not sure which one. There is a # on it but it's not a GM#. I didn't take any chances and bought both GM solenoids. I can't remember which solenoid required the different connector but it had 2 for either solenoid. It just had a cap on one of them SO I just switch the cap and the OBDII connector popped in.

I'm not a trans guy by any means. But on my old Opti setup, I never had an issue with any forced down shifts. BUT, I did have to tune it because it would shift up into OD before 30mph, then never downshift unless I was really getting on it or come to a stop. So, with a whole day of testing and tuning. I had it dialed in perfect. Cruise shifts were nice and WOT was dead on.

I wish I knew of you 7 yrs ago when my trans first went out. Since then the car barely seen 4000 miles.

[383z]

This is what I was just doing my homework on. I'm gathering parts for a 24x conversions and just order a harness from Bill at BP Automotive, but he is waiting on me to figure out how to make my built 4L60 work with the conversion.
On the EFI connection web site it say, "The LS1 PCM cannot control torque converter lockup for 700R4 or 4L60 transmissions. You will need to install an aftermarket lockup kit."
Will this work or do I need to buy a another transmission and exchange the internals and then buy another throttle body, because I have a kick down cable? I really don't want to buy another throttle body because I have a AS&M throttle body and really like it.
I also heard all I have to do is change some solenoids, but don't know what exactly what to do. I just want to make this work the best while spending the least amount. LOL

[Mystery Bird]

Question: 95 4l60e + 95 PCM + 94 wireharness = failure???

[CPT]

Question: 95 4l60e + 95 PCM + 94 wireharness = failure???

Yes. The '94 wiring harness has one less wire than a '95-up.

Frank

[Chrizar]

So if the 95 is pretty much it's own year for a trans, why do the 96 trans work in those cars? Or is that like a ticking time bomb on something going wrong? (I have a 96 4l60E in my 95 atm)

[CPT]

So if the 95 is pretty much it's own year for a trans, why do the 96 trans work in those cars? Or is that like a ticking time bomb on something going wrong? (I have a 96 4l60E in my 95 atm)

In many cases of that swap, it will have a forced downshift (runaway) issue.

Frank

[CPT]

Fastbird, this should really be a sticky. I get private messages about the 4L60E interchanges quite a bit.

Frank

[SMok3 Em A11]

Fastbird, this should really be a sticky. I get private messages about the 4L60E interchanges quite a bit.

Frank

Like from me. LOL
Thanks for showing me to this write up.

[Injuneer]

Frank - Are these 4L60E differences the same for the V6 F-Bodies?

[CPT]

Frank - Are these 4L60E differences the same for the V6 F-Bodies?

Yes, they are. The only real difference between the V-6 and the V-8 4l60Es are the cases. The servos differed from model to model also, The v-6 F-Body 4L60Es used the 553 servo, whereas F-Bodies, Vettes, and B-Bodies used the "corvette" servo. Only the 4 cylinder S-10s used the 554 servo. 1993 V-8 truck units also came with the "Corvette" servo. Other than the servos, the internals are identical, unlike older 700R4 units, which had less clutches in the 6 cylinder models. The 90 degree V-6 4L60Es had the same bellhousing as the V-8.

[Injuneer]

Thanks!!

[SMok3 Em A11]

Quick truck 4l60e question Cahall

We discussed my 95 k2500 the other day and you told me 95 was a stand alone year due to the 3-2 downshift I believe. That being said what would it take to make other year 60e or even 80e trans to work in my 95? Is it just a tune or is there more to it? Thanks again!

[CPT]

Quick truck 4l60e question @Cahall (http://ltxtech.com/forums/member.php?u=5698)

We discussed my 95 k2500 the other day and you told me 95 was a stand alone year due to the 3-2 downshift I believe. That being said what would it take to make other year 60e or even 80e trans to work in my 95? Is it just a tune or is there more to it? Thanks again!

Technically you can't even swap to a '96 computer to control a 'later 4l60E because the '96 LT1 uses a crank sensor. The differences in the transmission are the valve body casting, 3-2 solenoid, seperator plate, and internal wiring harness. As for the 4L80E, I can't accurately answer that because we don't do those swaps. We had too many customers with the cars slowing down too much years ago. From what I understand, any year 4L60E computer can be made to operate a 4L80E though. An '80E doesn't use a 3-2 solenoid.

Frank

[SMok3 Em A11]

Technically you can't even swap to a '96 computer to control a 'later 4l60E because the '96 LT1 uses a crank sensor. The differences in the transmission are the valve body casting, 3-2 solenoid, seperator plate, and internal wiring harness. As for the 4L80E, I can't accurately answer that because we don't do those swaps. We had too many customers with the cars slowing down too much years ago. From what I understand, any year 4L60E computer can be made to operate a 4L80E though. An '80E doesn't use a 3-2 solenoid.

Frank

Not sure if this makes a difference but its not an LT1. Its a tbi 350 in my truck. Do the 96 vortecs use a crank sensor also?

[CPT]

Not sure if this makes a difference but its not an LT1. Its a tbi 350 in my truck. Do the 96 vortecs use a crank sensor also?


I'm not really sure.

Frank

[dawdaw]

Not sure if this makes a difference but its not an LT1. Its a tbi 350 in my truck. Do the 96 vortecs use a crank sensor also?

yes 4x crank sensor

[rwd_pete]

I have been reading about the differences between the 4L60E years.

I have a 96 Impala SS. I bought it in '98 with 30,000 miles. I've had the trans rebuilt twice. The second time it seemed to pulse at high rpm going into third. The trans shop swapped the convertor and flywheel but it seemed the same. I had a 95 Impala SS motor and trans and he swapped the other '95 trans in and it still seemed the same so we left it there. After about 50,000 miles I have never noticed an issue. We put the rebuilt trans behind the 95 engine and it seems to be okay too with a 95 PCM.

Now I have a trans and harness from a L99 94 Caprice. It is hooked to an LT1 and computor from a '95 Vette. It is destined for a swap into my 78 Malibu. Does this look like trouble? 28719Can the 94 L99 PCM be reprogrammed for the LT1? There is a 95 Caprice in the local U Pick yard with a L99. I can get the trans for $200. Is that the necessary approoach?
Pete

[CPT]

Your '95 Vette PCM will be "looking" for a PWM solenoid that the '94 4L60E doesn't have.

Frank

[rwd_pete]

Hi Frank
Thanks for the confirmation. It's a lot better to find out now before the combination is in the car.
Pete

[NoMoneyZ]

Your '95 Vette PCM will be "looking" for a PWM solenoid that the '94 4L60E doesn't have.

Frank

Hey Frank,
could this be the reason why the 94 trans in my 95 car doesn't have lock up. It shifts like a mofo just no lock up in overdrive. I scanned it with a tech1 at work and it showed a pwm code.

[CPT]

Hey Frank,
could this be the reason why the 94 trans in my 95 car doesn't have lock up. It shifts like a mofo just no lock up in overdrive. I scanned it with a tech1 at work and it showed a pwm code.


Yes, it's the reason. If you continue to drive with no lock up, ot will damage the 3-4 clutches in many cases.

Frank

[95TAVert]

My 24X (2000 truck PCM)conversion is a 95 TA with 95 4l60E, The tranny is awesome except for the 3-4 shift, it is ten seconds late and sloppy. Then it likes to slip back to third with very little throttle. I have the TCC disabled for now, trying to figure things out. So do I need VB, plate and 2-3 solenoid or a 96 and newer trans?
Lots of great info here, I am just still not sure what to do???? thanks a lot.

[CPT]

My 24X (2000 truck PCM)conversion is a 95 TA with 95 4l60E, The tranny is awesome except for the 3-4 shift, it is ten seconds late and sloppy. Then it likes to slip back to third with very little throttle. I have the TCC disabled for now, trying to figure things out. So do I need VB, plate and 2-3 solenoid or a 96 and newer trans?
Lots of great info here, I am just still not sure what to do???? thanks a lot.

Yes, the 2000 PCM will want a '96-up valve body, separator plate, 3-2 solenoid and wiring.

Frank

[95TAVert]

Thanks Frank for sharing your knowledge, I have been looking for a straight answer for quit a while now.
I visited your website and got a suppliers name.

[American-Powerhouse]

95TAVert, email sent!

[tp5108]

Ive got 96 express van it has a 4l60e in it and Im putting a 5.3 in it. Ive got the wiring harness out of an 03 express van. What size spacer will I neefor the flywheel? will the 03 computer control the 96 4l60e correctly? Or is it gonna have issues with the ohms?

[CPT]

Ive got 96 express van it has a 4l60e in it and Im putting a 5.3 in it. Ive got the wiring harness out of an 03 express van. What size spacer will I neefor the flywheel? will the 03 computer control the 96 4l60e correctly? Or is it gonna have issues with the ohms?

The '03-up 4L60E uses a different EPC solenoid. The EPC solenoid and wiring harness can be changed in your '96 to the new style to make it compatable. I'm not sure about the spacing. We Usually do case swaps so the correct trans and converter can be used behind the LS style engine

[tp5108]

So I would need a epc solenoid and wiring harness.is the pressure control solenoid in the 96 tranny not electronic?I read the 96 tranny needs a .400" spacer.where would I get the wiring and how hard is it do the work to replace solenoid and wiring

[CPT]

So I would need a epc solenoid and wiring harness.is the pressure control solenoid in the 96 tranny not electronic?I read the 96 tranny needs a .400" spacer.where would I get the wiring and how hard is it do the work to replace solenoid and wiring

Yes, the '96 is electronic but the EPC for the later units use a different resistance. The solenoid is pretty easy to change. It's just a matter of removing the 2nd accumulator housing that's held on by 3 10MM bolts, and the 8MM bolt that holds the EPC bracket on. The wiring harness has 4 tabs that hold it in the case that have to be compressed to push it through. the harness will only come through the case if the EPC is removed first. Other than getting the connector through the case, it's just a matter of uncliping the connectors to the solenoids and removing the 2 10MM bolts to get the TCC solenoid out.

[tp5108]

Ok I was checking all the pins on the 5.3 wiring harness and on the 20 pin transmission connector all the pins are good but it doesn't have the pins t and u in it which are the 2 torque converter solenoid pins. They aren't on the plug or ecm pin out

[CPT]

Your '96 and '03 should have the same number of pins in the connector. The only change made after '96 was the EPC resistance and then an input speed sensor was added in '05 which required more pins in the connector.

[tp5108]

I found out what the problem was. The 03 wiring harness I have is set up for a 4l80e so im I gonna have to add pins u and t for the 4l60e

[tp5108]

How do you take the transmission 20 way connector apart to add pins?

[rjsieb]

Hi. I understand everyone says that the 95 is a standalone year but what I want to know is. I have a 95 truck and a 97 4l60e. What if I took the valve body and solenoids/ wiring from my 95 trans and installed it into the 97 trans? Would this be possible? If not why? Thanks in advance.

[CPT]

Hi. I understand everyone says that the 95 is a standalone year but what I want to know is. I have a 95 truck and a 97 4l60e. What if I took the valve body and solenoids/ wiring from my 95 trans and installed it into the 97 trans? Would this be possible? If not why? Thanks in advance.

Yes, you can swap the parts from the '95 to the '97. You will have to swap the complete valve body and all solenoids, separator plate, and wiring.

Frank

[rjsieb]

Ok. Thats what im going to do. I was pretty sure it would as the cases look the same on the outsides. Thanks for the help.

[Badazz 97 TA]

Are there any isssues with taking a 97 F-body torque converter and putting it in a 1994 corvette A4 transmission? Are converters interchageable?

[CPT]

Are there any isssues with taking a 97 F-body torque converter and putting it in a 1994 corvette A4 transmission? Are converters interchageable?

Stock converter or aftermarket?

[Badazz 97 TA]

Stock converter or aftermarket?


Its 9.5in 2800 FTI lock up converter. Trying to sell it to a guy with a stock 94 automatic LT1 corvette.

[CPT]

Its 9.5in 2800 FTI lock up converter. Trying to sell it to a guy with a stock 94 automatic LT1 corvette.


It will work.

[Mjminino]

I have a 2001 5.3L suburban engine that obviously came with the 4L60E 4x4. I am looking for a 4x2 4L60E, what are all the years should I be looking at getting for that 2001 5.3L to allow the wiring harness to merry up with out issues. Thanks in advance.

[CPT]

I have a 2001 5.3L suburban engine that obviously came with the 4L60E 4x4. I am looking for a 4x2 4L60E, what are all the years should I be looking at getting for that 2001 5.3L to allow the wiring harness to merry up with out issues. Thanks in advance.

The 5.3 is an LS based engine so only an LS style bell housing will work. A truck between 99 1/2 and 2002 will work or an F-Body from '98-2002. If you're planning on having a trans built, the 4X4 can easily be swapped to a 2WD simply by changing the output shaft.

Frank

[Mjminino]

What exactly is stopping me from using that transmission instead of trying to locate a 4x2 one? I don't have a drive shaft for my 64 C10 created yet, so is it purely the drive shaft yoke that wont work because of spline count or whatnot?

[bigvanvader80]

I see in the original post that at least twice, it lists 4L60E for 93 models. I'm curious as to why. is there a mid model year switch to the '60E? I was under the impression that 93's came with 700r4/4L60. Could someone chime in as to what 700r4/4L60's are compatible? Maybe what mods are required for the different models? Truck tranny swaps, etc. I started a thread about using a 700 from a 2wd truck (88-92 modles) in my 93 but it looks like maybe this thread would be best for other 700r4 guys. :)


*edit* my mistake,it clearly says that 4L60E was only available in trucks for 93. Sorry. My fail. But, my question still stands about using a 700 from a truck in a 93 fbody.

[CPT]

I see in the original post that at least twice, it lists 4L60E for 93 models. I'm curious as to why. is there a mid model year switch to the '60E? I was under the impression that 93's came with 700r4/4L60. Could someone chime in as to what 700r4/4L60's are compatible? Maybe what mods are required for the different models? Truck tranny swaps, etc. I started a thread about using a 700 from a 2wd truck (88-92 modles) in my 93 but it looks like maybe this thread would be best for other 700r4 guys. :)


*edit* my mistake,it clearly says that 4L60E was only available in trucks for 93. Sorry. My fail. But, my question still stands about using a 700 from a truck in a 93 fbody.

The '93 F-Body used a 4L60 (not a 700R4). While the 2 are operationally the same, they aren't directly interchangeable. The '93 4L60 uses a round, 5 pin case connector. the 700R4 uses a square, 4 pin case connector. The reason for the different connector is the 4L60s unique pressure switch arrangement on the valve body that control converter clutch apply. The valve body holds 3 pressure switches on a '93 unit. The later 700R4s only had a provision for 1 switch. The '93 4L60 also had changes made for reverse apply. This made in necessary to design a "one off" valve body casting that had a 3rd check ball, whereas the 700R4 only had 2. The extra check ball required a separator plate with a coinciding hole. What many rebuilders even overlook is the fact that a '93 4L60 uses a 4L60E pump stator and reverse input housing. If any of these parts are mismatched, it can cause either a harsh or soft reverse engagement. If the electronics for the pressure switches/converter clutch aren't correct, it won't have converter clutch (lock up) apply. This will cause overheating and subsequent 3-4 clutch failure in the transmission.

[bigvanvader80]

The '93 F-Body used a 4L60 (not a 700R4). While the 2 are operationally the same, they aren't directly interchangeable. The '93 4L60 uses a round, 5 pin case connector. the 700R4 uses a square, 4 pin case connector. The reason for the different connector is the 4L60s unique pressure switch arrangement on the valve body that control converter clutch apply. The valve body holds 3 pressure switches on a '93 unit. The later 700R4s only had a provision for 1 switch. The '93 4L60 also had changes made for reverse apply. This made in necessary to design a "one off" valve body casting that had a 3rd check ball, whereas the 700R4 only had 2. The extra check ball required a separator plate with a coinciding hole. What many rebuilders even overlook is the fact that a '93 4L60 uses a 4L60E pump stator and reverse input housing. If any of these parts are mismatched, it can cause either a harsh or soft reverse engagement. If the electronics for the pressure switches/converter clutch aren't correct, it won't have converter clutch (lock up) apply. This will cause overheating and subsequent 3-4 clutch failure in the transmission.
Thank you for your thoroughly depressing, explanation, sir. You're the first source I've encountered that pointed the difference between the 700r4 and 4l60. Up to this point, I had been lead to believe they were identical. Thank you for your time.

[superspirit]

Awesome thread, Frank I thank you for all the information you have supplied. I have a question that has been partially answered in this thread but I need clarification for a 93. I am picking up a 93 truck with a bad 4l60e in it, I have a good 97 4l60e from a LT1 camaro. can I change the wiring valve body and separator plate from the 93 to the 97 and install the 97 trans in the 93 truck. I know this was answered for a 95 but need clarification for the 93. thanks in advance.

[CPT]

Awesome thread, Frank I thank you for all the information you have supplied. I have a question that has been partially answered in this thread but I need clarification for a 93. I am picking up a 93 truck with a bad 4l60e in it, I have a good 97 4l60e from a LT1 camaro. can I change the wiring valve body and separator plate from the 93 to the 97 and install the 97 trans in the 93 truck. I know this was answered for a 95 but need clarification for the 93. thanks in advance.

You will have to change the pump assembly as well.

[superspirit]

That's exactly what I thought would have to happen. thank you for the clarification.

[steveh]

Yes. The '94 wiring harness has one less wire than a '95-up.

Frank

Frank, you can use a 95 trans in a 94 by adding the pwm wire from the pcm to the trans, and modifying the tune. 94- 95 pcms are the same.

A 94 trans will work in a 95 with just modifications to the tune.

[SSlowBoat]

Frank, you can use a 95 trans in a 94 by adding the pwm wire from the pcm to the trans, and modifying the tune. 94- 95 pcms are the same.

A 94 trans will work in a 95 with just modifications to the tune.
95 has pwm pump, 94 doesnt

[CPT]

Frank, you can use a 95 trans in a 94 by adding the pwm wire from the pcm to the trans, and modifying the tune. 94- 95 pcms are the same.

A 94 trans will work in a 95 with just modifications to the tune.

Yes, the '94 and '95 PCMs have the same part number. The PWM function is part of the tune.

Frank

[steveh]

95 has pwm pump, 94 doesnt
Right, and difference between the 94 and 95 are the trans harness is 1 wire that controls the PWM solenoid in the 95 trans., and how the TCC tables are set up to duty cycle the 95 for the PWM.

The pin is pin 6 in connector d, the blue connector on the PCM, to pin U on the trans. This ia a brown wire on 95's. Adding that wire on a 94 will allow usage of the 95 PWM trans when the TCC tables are modified to the 95 settings or whatever custom settings you want to try.

It's a very easy mod to do.

This is good info, opens up more choices for 94-95 LT1 owners. I run a 95 in my 94 this way. that I built, and it works great. I race weekly with my car.

[steveh]

Frank, can you edit the first post in this thread with this info for the 94-95 years? When I decided to build my new trans with the 95 core after I determined all I needed to do was add the wire and change the tune, I searched to see if others had done this and found nothing (probably because of my search strings), and found most say it can't be done.

Thanks for sharing your many years of experience publicly. I learned a lot from your posts when i researched building my trans.

[SSlowBoat]

Cahall...

[4586]

Frank

Read through all the posts and have one basic question. When replacing the 4L60E in a 1995 LT1 "F Body" can a 2WD 4L60E from a 1995 truck, Caprice or van be used?

Thanks

[Erik52]

I have a 79 Chevy G20 van with a 400 and 3 speed trans. Am looking at a 85 700 R4 from my neighbor, would this be a direct fit or is there complications to be had?

[SSlowBoat]

I have a 79 Chevy G20 van with a 400 and 3 speed trans. Am looking at a 85 700 R4 from my neighbor, would this be a direct fit or is there complications to be had?700R4 has a TV cable, have to add that. I think it will bolt up. The only time ive read of issues is pontiac 400's to chevy. I know back in the day the turbo 350 had a different bell pattern for pontiac/buick 400

Sent from my SM-G975U using Tapatalk

[Michaeldolph]

Help please!!! I have a 1996 Camaro RS and my 4l60e is done for. I have a good 4l60e out of a 1998 Firebird (also a v6 car). Can I put the 98 into my 96?

[SSlowBoat]

Help please!!! I have a 1996 Camaro RS and my 4l60e is done for. I have a good 4l60e out of a 1998 Firebird (also a v6 car). Can I put the 98 into my 96?

i dont believe so.

[T37]

I have read through all the posts in this thread and hope someone in the know can answer a question....here is the story....bear with me please .... in the early 2000's, I bought a 63 nova hardtop....being one not to leave well enough alone, it was time for out with the old straight 6 and glide and in with something else - a LT1 with a 4l60e out of 96 corvette with only 50k on the odometer.....things progressed and I put the 4l60E on the shelf in favor of a t56.....am still sorting out rear suspension and other things but that combo seems fine.....enter a new project...65 El camino .....nice straight rust free car but a tired 327 with a turbo 350.....time for a LS in the 65 ....here is what I have and need to know.....I have a 5.3 L59 out of 2002 tahoe...no trans with it but it was a truck 4l60e .....I'm going to redo the harness to get rid of the unneeded circuits of a LS swap in an older vehicle and may go with a 03 drive by wire instead the drive cable intake that came with the 02.....have the intake with tac module ...pcm and harness.....anyway, will the 96 corvette 4l60E work with the 5.3? Appreciate any info to make a decision on....thanks in advance

[CPT]

No, the '96 Trans will not work with the 5.3.
The 5.3 needs a 2000+ 4L60E.

Sent from my LM-V600 using Tapatalk

[T37]

Thanks.....that saves me a lot of headaches...know what to look for now

[CPT]

You're very welcome.

Sent from my LM-V600 using Tapatalk

[kilohertz]

No, the '96 Trans will not work with the 5.3.
The 5.3 needs a 2000+ 4L60E.

Sent from my LM-V600 using Tapatalk

This thread just keeps on going, I love it.

I am contemplating a similar combo, I have found a 2001 6.0L LQ4 that had a 4L80E, and I have found a '97 4L60E from a 5.7 Vortec truck. If I find the correct crank spacer and flex plate, will this work with the '01 PCM (I have the ability to tune the PCM if need be)? If not, what are the issues and what would I need to make the combo work? I'm an electronics tech/mechanic so tuning, harnesses, solenoid swaps etc are not a problem for me.

Tranny code 617CJDY
TC code DHHF

Please and thanks.

Cheers

[Aepling]

Will a 2002 4l60e work in a 1996 Tahoe?

[LowLyfe]

Newby, trying to get my 95 k1500 5.7l back on the road. Bought truck without transmission. Found a 97 one piece PWM trans. I did not know that 95 was year specific only. After reading thread 100 times or more I am confused about the PWM trans that originally came in truck. Why won't the 97 PWM pump and valve body work in my 95???? Don't want to put it in if it won't work... I have already purchased overhaul kit converter for the 97... Built it with new pump and valve body... So according to the facts I have to use a 95 pump, valve body, spacer plate and internal harness for the 97 to work? Right? What about the converter??? Will the 97 I ordered work with all the 95 stuff?? A little dazed and confused on this issue .. need to have it running ASAP BUT WILL WAIT FOR CLARIFICATION ON MY ISSUE... I APPRECIATE ANY AND ALL HELP AND PROMISE TO NOT PARTAKE IN BUYING ANOTHER VEHICLE THAT IS MISSING THE ORIGINAL TRANSMISSION... EVER EVER EVER,😫😫😫😫😫😫

[SSlowBoat]

Newby, trying to get my 95 k1500 5.7l back on the road. Bought truck without transmission. Found a 97 one piece PWM trans. I did not know that 95 was year specific only. After reading thread 100 times or more I am confused about the PWM trans that originally came in truck. Why won't the 97 PWM pump and valve body work in my 95???? Don't want to put it in if it won't work... I have already purchased overhaul kit converter for the 97... Built it with new pump and valve body... So according to the facts I have to use a 95 pump, valve body, spacer plate and internal harness for the 97 to work? Right? What about the converter??? Will the 97 I ordered work with all the 95 stuff?? A little dazed and confused on this issue .. need to have it running ASAP BUT WILL WAIT FOR CLARIFICATION ON MY ISSUE... I APPRECIATE ANY AND ALL HELP AND PROMISE TO NOT PARTAKE IN BUYING ANOTHER VEHICLE THAT IS MISSING THE ORIGINAL TRANSMISSION... EVER EVER EVER,������������

the converter doesnt matter. everything else you listed is correct.

[LowLyfe]

Thank you sir. Awesome thread. Much appreciated

[SLL]

Help please.

Removed prior engine and tranny combo. Purchased 97 LS1 with OEM harness and PCM pulled from a C5 corvette for a swap. All stock 97 parts and components on the motor.
Will a 2005 4l60E (from a chevy Silverado) work with the 97 PCM or will it throw codes?

[DesertRat828]

New user here. My question involves my 1995 K1500. My motor has near 300k on it and I was able to aquire a 96 Yukon with the 5.7l Vortec. Since I got the whole vehicle my plan is to swap the entire wire harness out(since 95 was TBI and obd1 and 96 had the spider injector and obd2). What I want to figure out is what changes will I need to make for my 95 4l60e to work with my 96 Vortec 5.7l

Thank you for any help.

[Injuneer]

meissen

SPAM

[Z28pr0jekt]

Taken care of

[Injuneer]

meissen

SPAM - 2 posts

[meissen]

deleted

[bigunga1]

None of the '93 -'97 4L60E's are directly interchangeable, except '93 and '94 and '96 and '97!!! Here's a list of yearly differences that will show you why. Yes, some years will fit in others and may not even throw a code, but there will be an issue in the long run. The big issues become forced 3-2 downshifts, and converter lock up issues and burnt lock up clutches. When a converter cluych cause it to lose lock up, the 3-4 clutches, in the transmission will soon follow because the 3-4's need lock up to keep them cool while cruising in overdrive.

1993: These were used in TRUCKS only. Not available in F-Bodies, B-Bodies, or Vettes

1994: Interchangeable with '93 4L60E with no modifications. The '93-'94 is a NON PWM transmission. This means that the lock up apply strategy is an on /off arrangement. It has an 11 pin case connector. Does not have PWM cast into front pump. 1 piece TCC control valve in the valve body. Plate has holes in plate, marked in diagram below. 1st design 3-2 valve

1995: Stand alone year! Will not interchange with any other year. This is a PWM transmission. An extra solenoid was added to the valve body to control the pulsed lock up strategy of the conerter clutch. It has a 12 pin case connector, extra wire in the transmission to computer harness and different computer to control the new PWM circuit. Has PWM cast in front pump. Front pump internal passages different to match new TCC strategy. 2 piece TCC control valve in valve body. Has holes in plate, marked in diagram below. 1st design 3-2 valve. 12 pin case connector. '94 computer won't recognise new TCC strategy., and will burn lock-up clutch and 3-4 clutches up. '96 computer isn't compatible with '96 3-2 control solenoid.

1996: The 3-2 downshift strategy was changed to an on /off arrangement. The 3-2 downshift solenoid was changed to a 20-31 OHM solenoid, from the previous 10-15 OHM solenoid. The 3-2 control valve was changed to the second design valve. The easiest way to identify the valve is, the second design valve will fall out as soon as the solenoid is removed. The first design has a plug and retaining clip. TCC solenoid remains 10-15 OHMs, which is the same as the '95 arrangement. Has PWM stamped cast in pump. pump is the same as '95. Will not interchange with '95 unless changing 3-2 solenoid, valvebody casting, and seperator plate. Has holes in plate marked in diagram. '94 or '95 computer will not accept the 20-31 OHM 3-2 solenoid and will throw an SES light and throw the transmission into limp mode. Some less knowledgeable builders will swap the solenoid so the computer will see the correct resistance, but the valve itself then causes downshift issues. If only the solenoid is changed, it will result in a 3-2 downshift cut loose. In other words...3-neutral-2 downshift. Speedo moved to passenger side of tail housing, but easily changed.

1997: Basically the same as '96.

*** ADDITIONAL INFORMATION***. We have found that the '94 and '95 cars share the same part number for the PCM. This means that the PWM function is part of the tuning. It appears as though it's possible to install a '94 4L60E in a '95 vehicle as long as the PCM is reprogrammed to delete the PWM function. A '95 can be installed in a '94 as long as you add a wire into the trans harness that connects the PCM PWM pin to the transmissions PWM pin. The pin is pin 6 in connector d, the blue connector on the PCM, to pin U on the trans. This ia a brown wire on 95's.

Hello Sir

Any chance you could expand your awesome knowledge out 2-3 year models. Specifically 97/98/99 5.7 models please???

I’m working on a 97 4.3 that’s blowing the PRND321 fuse. Changed switch assy. No help.

When driving. OD/3 is first gear. 2/1 is second gear. Will not shift past second

Also own a 99 k1500

Thanks

[Injuneer]

Unfortunately, Frank @ CPT passed away a while back. His wife Gail is now running the business.

[bigunga1]

Wow. Ok. Anyone else have this knowledge????

[Dznutz420]

Hello sorry this is my first time posting to a forum so I'm not really sure how to do this but I need to know if I can use a older style 1 piece case 4l60e from my 96 gmc k1500 in my 98 gmc k1500. Both trucks are 4x4 and have the 5.7 in them thanks!

[SSlowBoat]

Hello sorry this is my first time posting to a forum so I'm not really sure how to do this but I need to know if I can use a older style 1 piece case 4l60e from my 96 gmc k1500 in my 98 gmc k1500. Both trucks are 4x4 and have the 5.7 in them thanks!

should be able to, pretty sure the 1 piece bell ones are the same