Question about GMC Sierra 2500HD
Posted by Anonymous on
If this is an older rear wheel drive vehicle you should have the "U" joints checked is the drive shaft as one may be going bad.
Posted on Mar 22, 2011
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Posted on Jan 02, 2017
This sounds like one or more of your motor/powerplant mounts is broken. Here is an easy test:
Have someone sit in the driver's sear with engine running and trans. in Park.
You stand in front with the hood open. Have them shift from Park to Reverse, and then Drive and back to Reverse and Park, taking time to stay in each gear and give some throttle while holding the brake pedal tight. This will rock or move the engine a certain amount as they shift through the gears and apply power lightly. It will move alot more violently with broken mounts.
If you have a clunking noise on Reverse shifts, you should be able reproduce this with the hood up and pinpoint the noise and/or sight the faulty motor mount with a friend's help. Good luck, I hope this puts you on the right track to fixing this annoying noise.
Sincerely, Tater Todd
Posted on Jan 28, 2009
HI, i would inspect the strut assembly for loose structure asap. i would also inspect the wheel knuckle and rotor and tie rod ends for loose fit as well. inspect thoroughly.
Its most likely the CV-joint assembly. the boot may have slipped off, allowing the joint assembly to dry up. i advise to inspect all the above before looking at the CV-half joint assembly and boot.
Posted on May 25, 2009
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