I have a stock 95 Z28 with the 4L60E. It seems to not want to shift into overdrive, it just stays in 3rd. And when it seems to want to shift into overdrive, it makes a weird whining/groaning noise that seems to come from the rear. But if I move the shifter to 'drive' the noise goes away. I think it's getting worse now. Under mild to moderate acceleration, it will not shift to 2nd unless I let off the gas a little. I'm not getting any SES lights or anything like that.

I first checked the fluid and it looked and smelled slightly burned. It was a darker red but it wasn't silver like I've seen in other burnt up trannies before. So I changed the filter and fluid. When I pulled the pan off, the little pan magnet was full of metallic sludge!

Well, doing that didn't fix my problem but I wasn't surprised. I'm guessing my tranny is toast, but I'm also wondering if a bad torque converter could cause the above problems?? Either way, the tranny is coming out. Anyone have any ideas?? This really sucks and I just bought this car 3 months ago. Thanks for any suggestions!

 

Sounds like your clutch drums in the trans are on there way out, The only way to tell for sure is to pull the trans and rip it apart.

 

see link in sig for quality rebuilds.

 

Where is LT1 Dave located?

 

he is here in cincinnati oh. Even after shipping it is cheaper than most places. I am using a stage 3 behind a 383 Imp SS and the thing rocks. Shifts hard and an fast.

 

Thank you for the link. The price for a stock rebuild seems really good, definitely way cheaper than the local shops here. I'm not looking to race this car, I just wanna get a quality rebuilt tranny for a good price so I think that would suit me very well.