3rd and 4th gear

[soap wagon]

I have a 93 Burb w/5.7 tbi and 4l60e trans...when I try to go faster than 30 mph, the trans feels like it's slipping and the engine revs go waaay up, especially uphill. It does this in OD or in D. Sometimes I have to shift to 2 to get rolling again. The trans was leaking a small amount of fluid and I have to constantly check the trans fluid. Any ideas to why this is happening?? I personally think 3rd and 4th have broken on me here.

 

[LT1/TA]

Sounds like the 3-4 clutch pack is toast.I have had this happen to me a couple of times on 4l60's and 4l60e's.
Looks like it's time to rebuild or replace;if you replace you will need to find out if you have a 4l60 or 4l60e.You should have
a 4l60e being a 93 model.

 

[soap wagon]

That's what I was fearing the most: the rebuild. Ok I'll find a good
Transmission shop in my area and go from there. I bought
This thing with almost 200k on the odo. The po did lots of
Towing with it.