So I have a few issues/questions.

1- this does not happen all the time, but it does happen pretty regularly. When I shift in to reverse I get a clank sound.
I havent been able to figure out a patter of when it happens, does it when first starting in the am sometimes, does it after i have been driving for half a day.


2- not constantly but fairly consistent raddeling almost metal clanging sound when I press the gas pedal in gear(have only noticed it in first few gears gear) the sound comes and goes, when I hear the sound if I let off the gas it stops immediately.

Any tips would be greatly appreciated.


Truck is automatic.

 

Well I'll tell you no need to worry about 1st question. Rear ends get a little play in them over time and mine has done it forever and 204000 still going strong.

for 2nd question I am not really sure but have you checked to make sure exhaust is solid and isn't rattling around and stuff

 

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Does you experience these issues at a certain time of day, between certain temperatures; can you describe where the noise is coming from? Any additional information you can provide may help. Has the vehicle been diagnoses for these issues?

Louis
GM Customer Service

 

Sounds like U joints. With it not running, and in park with parking brake set, crawl underneath, roll the drive shaft back and forth to feel if there is alot of play.