Now I'm curious. You have alluded to this more than once. Are you under some kind of illusion that you have to remove the transmission to do what I proposed? Seriously? You previously referred to "splitting the case." You also referred to "...having the transmission out for service". If that's what you believe, then I'm totally wasting my time. By the way, does this number mean anything to you? 3TOJ710

 

Feel free to say you're wasting your time. And yes, it's the license plate from my Integra, which I assume you found by my Instagram post about it, since I link my Instagram right here on the forums in my profile, a car which I have since sold. Is there a point, or am I simply supposed to be impressed by your elite hacker skillz?

Hey, now there's actually something I didn't know about the PWM transmissions! Thank you very much for pointing this out, that goes straight into the knowledge bag for future reference.

 

I know that the PWM version of the transmission in our year Corvettes has a nasty habit of enlarging the piston bore over time due to the PWM operation of the TCC lockup valve piston, and that there is a repair kit designed to counteract this enlargement. And that you can change how the PWM transmission lockup works in the PCM so that it works like the 94 in order to prolong the life of said bore in case you catch it early enough and don't feel like doing the repair just yet. Just something to be aware of for the 95-96 Corvette versus the earlier ones.

 

No way I could impress a star such as yourself. Just making a point that maybe I'm not so "scared of computers". Your attitude(both here and on Youtube) suggested that you were of the age you are. Just wanted to confirm. Now, are you going to answer my question? Is that what you really believe with regards to servicing these transmissions??

 

I'm aware that there is an obvious "PWM" stamped into the bellhousing area of a PWM 4L60E (I actually just watched someone tear one down the other day), which would be a dead giveaway. Of course, to see it, you'd have to pull the transmission away from the engine and remove the torque converter, which...yeah, nah. That's what I was going off of. Of course, what you're probably referring to is literally yanking the pan and filter off and trying to find the PWM solenoid for the TCC valve assembly, which of course would be absent on a non-PWM transmission. I hadn't considered that since I was more focused on the "PWM" stamping rather than the actual solenoid itself.

That all being said, to bring this all the way back around, I'd still rather just plug into the sucker and check than take an ATF bath. But of course now that I know there's a specific control wire for it coming out of the PCM, I'll take ihatebarkingdogs's method instead!

 

IHBD was right! You don't know **** about these transmissions. "I actually just watched someone tear one down the other day". Probably on Youtube. You've never worked on one yourself have you? Yet you come here and act the expert. Anyone can watch Youtube. Your lack of true understanding shows when you say "Of course, what you're probably referring to is literally yanking the pan and filter off and trying to find the PWM solenoid for the TCC valve assembly". "Trying to find the PWM solenoid"??? Are you kidding me? Anyone who has had actual experience with these would see it immediately. Stevie Wonder would probably find it before you. "... take an ATF bath". More statements that show your lack of experience with these transmissions(or any trans by the sounds of things). If you know what you are doing, the only way to "take an ATF bath" is if you want it and enjoy it.

 

Couple things.

1. Sure, anyone who's an expert would see it immediately. Do you think the OP, who came here asking which transmission he has, is such an expert?
2. I came here to correct your incorrect information regarding the '95 4L60E, which I have successfully done. I don't need to have physically disassembled a transmission to know how the related systems in our cars work, and give accurate advice regarding said systems to OP per his original question.

But hey, that's cool. We both know where we stand now, and hopefully by now OP has already figured it all out.

 

You are correct. I did give incorrect information initially. Not scared to admit that. I had confused the PWM introduction with the 93 - 94 GM 4L60E introduction. Why are you so adamant that YOUR way is the best? As I have stated several times, not everyone is able to, willing to spend the money or interested in doing it your way. If they can and want to, good. That works too. An error is an error but did you see me argue the point when it was pointed out? NO!.

"Do you think the OP, who came here asking which transmission he has, is such an expert?" Your words. Do you think he is "such an expert" in electronics and computers? Not knowing him, you nor anyone else should make that claim. You don't have to be an expert to accomplish what I proposed. A couple of wrenches and a valve body diagram will give you the answer in short order(also as I have said several times, gaining a trans service for the money as a plus). I would bet the ranch that there are far far more people here with enough mechanical skills and interst than there are with computer interest to follow your route.

"I don't need to have physically disassembled a transmission to know how the related systems in our cars work". That has to be the most arrogant statement I have heard in a long time.. The next time you need dental work done, I challenge you to go into the dental office and say "I'd like to get my tooth cavity filled but I want the doctor who has never done it before because I know they have read about it and fully know what they are doing". Same thing.

Now I know how much you young ones want the last word about anything so this will be my last post on this matter. Have at 'er. But I do want to give you some friendly advice. Everyone has to learn about things. There is a wealth of knowledge on this forum about anything C4 related that has been here long before you came along. It has come from years and years of actual experience physically working and learning. At this stage off your life, you don't possess all this knowledge.(or for that matter, anyone at any age) The best way is to sit back and take it all in. Participate and ask questions but don't arrogantly challenge people who have years of experience or put forth condescending remarks when you don't fully understand what you are talking about.. That doesn't prove positive in the long run. I see in other threads that you have the same attitude towards people with experience that you have shown here. Not particularly helpful to you.

 

No, instead you decided to get snarky, so I got snarky right back. It was obvious from your first reply that you were one of the folks on the board who finds the 'old school' way of doing things better than the 'newer school' way of doing things. I'm 'sure' my way is better because it's non-invasive versus invasive. That said, ihatebarkingdogs has the real victory here, as not only is his method noninvasive, but requires only the standard-issue MkI Eyeball to check.

That's the fun part here--both of our suggestions on how to confirm what should already be obvious (simply by the fact that he has a '95) require a little additional knowledge. Just removing the pan and looking at the valve body won't tell someone who doesn't know what they're looking at what transmission it is, so they'd need to first research that. Just plugging a computer into the car won't tell them if it's a PWM or not, they'd first need software. There's nothing inherently complicated to either of our methods. Yours, as long as you can get the car in the air and turn a wrench and follow instructions, you can do it. Mine, as long as you have a computer and can follow instructions, you can do it. They aren't being asked to rebuild the 4L60E on your side, and they're not being asked to, and I quote, do "a deep dive on the workings of a microprocessor" on my side. The key difference between our initial suggestions is that your method is invasive and mine is non-invasive. And as I've already said, it's really up to the OP which one is better for his situation. In reality, neither is, because again, ihatebarkingdogs has the winning solution if OP doesn't just want to trust that all 95-96 Corvettes have a PWM 4L60E.

Except that it isn't? The OP came in to ask what transmission was in his '95 Corvette. Answering that question accurately and providing a non-invasive method by which one can confirm that my information is correct does not require having serviced a 4L60E. They are not mutually-inclusive, similar to how my not being over half a century old is wholly irrelevant to this discussion.

Sure thing! I get it, I don't have the decade-plus sticker on my username, so clearly it's just unacceptable that I go around trying to help out with accurate information. Not a worry--we shall part ways, mark one another's names in the back of our minds, and go back to the whole point of this threads and others in the first place--trying to help people to the best of our abilities.

Peace!