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About SansSouci

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  1. GM makes a special lubricant just for this problem. I’ve used it and it does work . I’m not home now to look up the name, but the parts guy should be able to get it . Did mine several months ago and it’s still ok.
  2. Ask him if he’s heard of the new technology called “ stretch belts “
  3. I had a vibration and whine in my 2014 Denali when it was new. The dealer wanted to replace just the ring and pinion because they found that there was a manufacturing defect in some of them. After many discussions, they opted to put in a complete new differential, wheel to wheel. Vibration and whine completely gone. Good luck
  4. I also had wind noise on the drivers side of my 2014 Sierra. After doing a lot of experimenting I found that the plastic body strip that runs from the top of the windshield to the back of the cab was loose at the leading edge by the windshield. I lifted the first foot of it, put some black silicone under it, and let it sit overnight. I have not heard the noise since. This is the second truck I did this to for hard to find wind noise. Hope this helps.
  5. According the manual , my truck has 9012 headlight bulbs in it. Is there some thing different available? Thanks
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