03 Sierra Denali clunky shifting

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07-25-2014, 03:06 PM

rockoosi1

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03 Sierra Denali clunky shifting

I recently purchased the truck and I've noticed that under light throttle it's very clunky/jerky when it shifts gears. The funny thing is, when I give it a little more throttle or I'm in tow mode pulling my car trailer (maybe more throttle is being applied as well) it seems to shift normally. Does this sound like a transmission tuning issue? Or something else? Thanks!

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07-25-2014, 08:29 PM

FFDP

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Does it make a clunk when you shift from drive to reverse or the other way around??

Perhaps a bad u-joint if that is the case. Just throwing an idea out there.

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07-26-2014, 05:31 AM

rockoosi1

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Quote:

Originally Posted by FFDP

Does it make a clunk when you shift from drive to reverse or the other way around??

Perhaps a bad u-joint if that is the case. Just throwing an idea out there.

Nope it only happens during light throttle shifts.

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