2012 Chevrolet Express 2500 V8-4.8LFACTORY OEM SERVICE PROCEDURE

Front Subframe Mount: Service and Repair




Drivetrain and Front Suspension Frame Insulator Replacement

Removal Procedure

1. Remove the screws retaining the fuel filter pipe to the body.
2. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
3. Use jack stands in order to support the body of the vehicle.

Factory service manual diagram



4. Release the brake line retainers closest to the first body mount (2) in order to ensure that the brake lines will not bend when you lower the frame.

Factory service manual diagram



5. Loosen all the body mount bolts (5). Do not remove the bolts.

Factory service manual diagram



6. Remove the bolt (5) from the body mount.
7. Lower the frame slightly.
8. Remove the body mount from the frame.

Installation Procedure

Factory service manual diagram



1. Install the body mount (2) to the frame.
2. Raise the frame.

Factory service manual diagram



3. Install the bolt (5) to the body mount.

Factory service manual diagram




Caution: Refer to Fastener Caution .

4. Install the body mount bolts (5) and tighten to 140 Nm (103 lb ft).
5. Install the brake line retainers.
6. Remove the safety stands.
7. Lower the vehicle.
8. Install the screws retaining the fuel filler pipe to the body.

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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