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GMC Forum: 2010 Denali AWD, 6.2
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Old 06-06-2019, 02:23 PM
ewillis ewillis is offline
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Default 2010 Denali AWD, 6.2

My son has a 2010 Denali, AWD, 6.2. He heard some clicking from what he assumed was left front so he replaced the CV. That wasn't it! At first the noise was just when you got on it but now it is much more prevelant. I have hearing issues (I wear hearing aids) so I am severely limited to diagnostics by sound when driving it. I hear the "clicking" but cannot say with certainty where it is coming from. To me it sounds like maybe a bad bearing or a spline that has gone bad but, there again, with bad ears this is still a guess.

I have jacked it up and shook the wheels with no obvious play in front or back. I don't know if this is "normal" but the rear wheels will still spin with engine off, in PARK with the rear jacked up.

Remember, I am limited to sound but is there something I can do to diagnose the issue? I am not familiar with domestic 4WD's since the 80's. Everything I have driven personally that wasn't a car, was a Japanese 4x4.
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Old 06-07-2019, 08:19 PM
mogleybear mogleybear is offline
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Drives a 2012 GMC Sierra 1500 Crew Cab
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Location: Jemez Mountains
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My dad's 2010 F150 two wheel drive will also allow the rear wheels to spin in park, but the driveshaft doesn't turn, if you try to turn both wheels the same direction (like the truck is rolling) they should not spin.

I had a 2003 Denali that the bearings in the front differential started to go out, I can't remember if the noise was a clicking though. Usually the clicking is a CV joint, you need to remember that there are 4 of them in the front drive axles.
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