2007 Hummer H2 V8-6.0LFACTORY OEM SERVICE PROCEDURE

Front Subframe Mount: Service and Repair


Drivetrain and Front Suspension Frame Insulator Replacement


Removal Procedure

Support the frame with the hoist when you change the body mounts. If only one mount is changed loosen and lower the entire side on which the mount in question is being replaced.

1.Raise the vehicle on a hoist. Refer to Lifting and Jacking the Vehicle .

2.Using jack stands or the equivalent to support the body where the mounts will be replaced.

Factory service manual diagram




3.Remove the body mount bolt, retainer, and lower cushion at the radiator support.

Factory service manual diagram




4.Remove the body mount bolt, retainers, and lower cushions at the front mount location.

Factory service manual diagram




5.Remove the body mount bolt, retainers, and lower cushions at the three other mount locations.

Factory service manual diagram




6.Remove the body mount bolt, retainers, and lower cushion at the rear most mount.

7.Disconnect or remove any wiring harness or component that may interfere with the lowering of the frame.

8.Lower the hoist in order to leave the body supported by the jack stands.

9.Remove the upper cushions and the shims from the vehicle.

Installation Procedure

1.Install the upper cushions and the shims to the vehicle.

2.Raise the hoist to allow the body mount bolts to be installed.

3.Connect or install any wiring harness or component that was removed to allow for the lowering of the frame.

Factory service manual diagram




Notice:Refer to Fastener Notice .

4.Install the body mount bolt, retainer, and lower cushion at the rear most mount.

Factory service manual diagram




5.Install the body mount bolt, retainers, and lower cushions at the three other mount locations.

Factory service manual diagram




6.Remove the body mount bolt, retainers, and lower cushions at the front mount location.

Factory service manual diagram




7.Install the body mount bolt, retainer, and lower cushion at the radiator support.

TightenTighten the bolts to 85 N οΏ½m (63 lb ft).

8.Remove the jack stands.

9.Lower the vehicle.

Factory Service Tools

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.

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