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Unidentified Clunk

kdrchuck

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kdrchuck Enthusiast

kdrchuck

Posted
Posted

Driving my 2010 CC 1500 with RC level, 285/70/17. Approaching the driveway is steep downhill and 90 degrees Right into my driveway which is not as steep as the approach. As I am straightening up and the rear wheels come over the curb into the driveway, i hear a clunk that sounds like it is from the rearend. It does not happen every time. I have no idea what it might be coming from. Everything is tight and appears normal.

 

Any thoughts?

snarkee Senior Enthusiast

snarkee

Posted
Posted

i had a similar noise when turning slow into my driveway.....sometimes it felt like someone was kicking the floor under my seat, other times it felt like it was in the rear end

 

 

it ended up being the body mounts....3 or 4 of the 6 needed insulators or something

 

theres a tsb

 

ps. i had a hard time diagnosing mine because of the wet winter weather.....the wetness would make the mounts swell

Stevens03 Senior Enthusiast

Stevens03

Posted
Posted

Most likely your leaf pack making noise on the flex. GM does sell leaf insulators if it bothers you to much. They do help. :thumbs: Also could be body flex.

kdrchuck Enthusiast

kdrchuck

Posted
  • Author
Posted

Thanks, I will check the spare. Doesn't sound like it should be real concerning. I'm fine with it every now and then.

 

If someone could give me a link to the body mount TSP I would appreciate it.

 

Thanks,

Charlie

grimmysnr Enthusiast

grimmysnr

Posted
Posted

If i remember correctly the only Body Mount TSB was for beam shake and the installation of Hydraulic Body mounts had it been determined that the shake was excessive. For everything else, they just get loose or were loose from the factory and just need a little love. For my body mounts it is because the Westin nerf bar brackets have a weird design to them and contact the frame under flex. Tried to put some gap in there but ended up tweaking the bushings instead.

dbozman Enthusiast

dbozman

Posted
Posted

I had a similar issue. Sprayed white lithium grease on both ends of the leaf spring bushings and that seems to have solved it.

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