Transmission

Asked by bhardin21 Jan 21, 2020 at 01:45 PM about the 2002 Chevrolet Avalanche 1500 4WD

Question type: Maintenance & Repair

I have a 2002 Chevy Avalanche with a 4L60E transmission. Driving around town on surface streets there’s no problem. But when I get on the interstate and drive 10+ minutes at 60 plus MPH it then shifts hard from 1-2 when I exit. I’ve discovered that when I turn the engine off, even for just a few seconds, it shifts smoothly again.This makes me think it's an electronic or sensor issue instead something mechanical. Thoughts?

2 Answers
40,110

TDolby answered 4 years ago

Have it checked out. Transmissions are hard to diagnose over the internet.

Mark helpful
18,235

munron answered 4 years ago

I agree. Scan it for trouble codes or have a shop diagnose it. It sounds like an electronic issue to me.

Mark helpful

Your Answer:

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