Question about 2008 Chevrolet Silverado 1500

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Harsh shift, Acceleration hesitation, Rough idle

I have a 2008 Chevrolet Silverado 2WD, 4.8L V8, 4A, LT1 w/ 4 dr extended cab, with 23K miles. I get an occasional harsh shift from 2nd to 3rd, usually when the engine is somewhat cold. Also when I slow down to a stop, it sometimes feels like someone slightly bumped from behind, and I get this feeling again on takeoff from a dead stop. Also, if I slow down for a turn (but don't stop), and then accelerate again, often there is a hesitation before it accelerates, even though I give a healthy push on the pedal. Then when it does accelerate, there is a ****/whiplash as it hooks up again. I also have a rough idle occasionally, but I cannot attribute this to any particular situation, as it sometimes happens when the engine is cold, and also happens when the engine has been warm for a while. I've looked up these problems and found TSB numbers for all, and I'm going to take it to the dealer anyways (since its still under warranty), but I wanted to see if anyone had any ideas so I don't get the runaround at the dealer and get a worthless fix and/or a lot shoulder shrugging.

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  • 301 Answers

Your dealer will take care of it. That is the very best advice I can offer. Good luck to you..

Posted on Sep 23, 2009

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or sooner & you may never have trans
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Dec 17, 2012 | 2008 Chevrolet Silverado 1500 2WD

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