Center Support Assembly Reconditioning Repair

WARNING: This page is about a different car, the 2007 GMC Yukon XL and 2007 Chevrolet Suburban. However, it is still accessible from the selected car via links, so may be relevant.

Tools Required

J 39919-1 Center Support Thread Reamer. See Special Tools .
J 39919-2 Center Support Pin Gage. See Special Tools .

Fig 1: Reaming Center Support Assembly Bolt Hole Using J 39919-1

Courtesy of GENERAL MOTORS CORP.

NOTE: You may recondition the original center support assembly one time only. You must use the new, larger, service bolt with the reconditioned center support assembly in order to avoid component damage. The service bolt is yellow in color, and the production bolt is black in color.

Perform one of the following steps:

If the center support assembly has been previously reconditioned, or if the J 39919-2 fits into the bolt hole, you MUST replace the center support assembly and bolt. See Special Tools .
If the center support has never been previously reconditioned:
1. Insert the J 39919-2 into the center support assembly bolt hole. See Special Tools . If the J 39919-2 does NOT fit into the center support bolt hole, you can recondition the center support assembly for reuse. See Special Tools .
2. Ream the center support assembly bolt hole to the proper dimension using the J 39919-1 . See Special Tools .