GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2006 🢒 TopKick C-Series (Conventional) C6/C7/C8 🢒 Body 🢒 Frame and Underbody 🢒 Engine Rear Crossmember Replacement

Removal Procedure
  1. Remove the wires, cables, and lines that are connected to the engine crossmember.

    2. Object Number: 817359 Size: SH
  2. Remove the support brackets that are attached to crossmember.
  3. Remove the bolts that are holding the crossmember to the frame rails.
  4. Remove the crossmember.

Installation Procedure
  1. Position and support the crossmember in the frame rails.
  2. Apply a medium strength threadlocker, GM P/N 12345382 (Canadian P/N 10953489) to the threads of the bolts.

    3. Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 817359 Size: SH
  3. Connect the crossmember to the frame rails with the bolts, the washers, and the nuts.

    4. Tighten
    Tighten the bolts to 100 N·m (74 lb ft).

  4. Install the support brackets for the engine crossmember with the bolts, the washers, and the nuts.

    5. Tighten
    Tighten the bolts to 100 N·m (74 lb ft).

  5. Install the wires, cables and lines that are connected to the engine crossmember.