4L60E ... Have a question...

[94GMCK1500]

During the recent cold snap, I started my truck and after a few minutes went to shift into reverse. Nothing happened. After sitting a few more minutes while running it decided to shift into gear and take off as if nothing happened... Last evening I was driving it, hit the throttle to leave a light and it felt little sluggish... No slip feel, just sluggish.... Shifts into gear fine and runs down the highway, you goose it and it feels sluggish.... Any thoughts ?

 

[95burban]

Fluid level

 

[94GMCK1500]

Fluid level

I checked that an it was on the mark with a healthy color. Although something new happened since this post. I took it out this evening and wanted to make sure I didn't have a fuel issue for the sluggish feel. I dropped it in low gear 2HI, when accelerating I heard a foul noise. Low sort of growl but not a growl of bearings grinding... So I'm thinking the transmission is smoked and possibly the transfer case could have some issues so pulling one might as well pull the other also... Project ? I don't know...

 

[Erik the Awful]

Did you check the fluid level with the engine running?

 

[94GMCK1500]

Did you check the fluid level with the engine running?

Last time I checked, engine should always be running....

 

[AuroraGirl]

Last time I checked, engine should always be running....

some transmissions dont need/have to be running. A th350 in my buick for example has dipstick markings for running and not running and hot /cold

 

[94GMCK1500]

some transmissions dont need/have to be running. A th350 in my buick for example has dipstick markings for running and not running and hot /cold

Let me re-phrase that.... Last time I checked, the year , make and model with engine 5.7 liter with a 4L60E is checked when running and best to check when at operating temperature. Yes, I checked again today and it was full... I am in full belief the transmission is smoked...

 

[MMcc]

This sticky thread diagnosed my trans to a T. And yea...its all bad news.

answer to any 4l60e trouble

 

[94GMCK1500]

This sticky thread diagnosed my trans to a T. And yea...its all bad news.

answer to any 4l60e trouble

I pretty much figured it'd be bad... My next step is decide if I want junk yard tranny and t/c if its bad also, or buy rebuilt....

 

[MMcc]

One thing at a time, right? Why would you assume the transfer case is kaput?

I went the reman route and swapped it in myself. While the TC was out, I took it to the rebuilder to have the seals replaced. He pulled out a busted lock ring too -- said he's never had one of these out and seen the lock ring intact.