2007 Chevy Silverado 1500
I just bough this truck from an auction the other day long story short I trailer it home pulled it off the trailer I jumped on the highway stomped on it it would go until it gos to shift into second then it would slip. But If I let off the pedal it will shift. It will do it in every gear. There is no transmission noise, I checked the transmission oil it was all up to level and didn’t smell burnt. I plugged in my code reader in there was no codes. I ended up pulling the transmission oil pan installed new filter and shifting solenoid’s. I checked the oil pan magnet and it had barely anything on it. If anyone has any ideas on what it could be or what I can check let me know. I just Don’t want to buy a new transmission if I Don’t have to. Thanks!

 

Some details would be helpful. How many miles? Average lifetime for the 4l60e is about 120k. Less if it wasn't maintained or abused.

That just means they cleaned it up before taking it to auction. Auctions are terrible places to buy vehicles.


There's not much else you can do. Take it to a tranny shop and see what they say, but you're probably looking a new transmission.

Actually there is something. You have a problem with the charging system. Fix that.