Some of you may have this info, I just thought I would share what I found. I was looking for info on how to correct the truck leaning to the left side in the front end. I was told there was a TSB by GM on this. After going to four dealerships, I found some help. It is PIT #3281, and all it consists of is using an updated isolator (part #15756770) as a spacer and stacking up two of them if needed in each pocket. The thought of stacking isolators didn't appeal to me so I called around and Belltech is making a spacer or shim that is 3/4 of an inch thick to solve the problem. Belltech told me that the spacer was being finished and should be out in about a month from now. If anyone is interested in the Belltech part #, I'll post it when I get the part.

 

I'm definately interested. Cause my truck leans bad, and just looks goofy. What pocket are you talking about though exactly?

 

The spring pocket in the a-arm and the pocket or perch in the frame that holds the coil. sorry.

 

Once and for all:

The GM lean is caused by an RPO for a second battery in cold climates. This second battery is located above the right wheelwell. Since virtually no-one gets this option, you are left with frame geometry which is designed to hold slightly more weight on the right side than the left side. You can either install a lower isolator on the right side(raising the vehicle), or you can cut 1/2 a coil from the right side(leveling the vehicle).

I would rather have a slightly lower level truck.

 

Right side meaning passenger side or driver side?

Rob

 

good info.

 

Passenger side.