GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2008 🢒 Silverado - 4WD 🢒 Engine 🢒 Engine Mechanical - 6.6L 🢒 Engine Mount Replacement - Right Side

Removal Procedure

    Object Number: 401885 Size: SH
  1. Remove the starter motor. Refer to Starter Motor Replacement.
  2. If RWD vehicle, raise the vehicle to a height to work through the front wheelhouse opening. Refer to Lifting and Jacking the Vehicle .
  3. If 4-wheel drive (4WD) vehicle, raise the vehicle in order to remove the front tires and wheels and support with jackstands.
  4. Remove the right front tire and wheel, if necessary. Refer to Tire and Wheel Removal and Installation .
  5. Remove the pushpins holding the right front fender wheelhouse inner panel (1).
  6. Remove the wheelhouse inner panel.

    7. Object Number: 657626 Size: SH

    Notice: Broken engine mountings can cause misalignment of certain drive-train components. Misalignment of drive-train components causes eventual destruction of the drive-train components.

    If one engine mount breaks, the rest of the engine mounts will have increased stress put on them. This could cause the rest of the engine mounts to break.

  7. Working through the wheelhouse opening remove the 3 bolts retaining the engine mount to the engine mount frame bracket.

    8. Object Number: 309158 Size: SH
  8. Remove the oil pan skid plate, if equipped.

    9. Object Number: 310119 Size: SH
  9. Remove the engine protection shield from the vehicle, if equipped.

    10. Object Number: 686706 Size: SH
  10. If RWD vehicle and equipped with an automatic transmission, remove the bracket bolt for the transmission oil cooler lines to the engine.
  11. Move the transmission oil cooler lines aside.

    12. Notice: When raising or supporting the engine for any reason, do not use a jack under the oil pan, any sheet metal, or the crankshaft pulley. Lifting the engine in an unapproved manner may cause component damage.


    Object Number: 657615 Size: SH

    Important: When raising the engine only raise enough to separate the engine mount from the engine mount bracket. Raising any further the fan shroud or the exhaust pipe will require removal.

  12. If RWD vehicle, using a suitable jack on the ground wire bolt bosses, raise the engine.

    13. Only raise the engine enough to separate the engine mount to engine mount bracket.

  13. If 4WD vehicle, attach a chain to the front of the engine. Use accessible mounting bolts for the generator mounting bracket and the power steering pump mounting bracket.
  14. Raise the engine with a suitable lifting device to remove the engine mount.

    15. Only raise the engine enough to separate the engine mount to engine mount bracket.


    Object Number: 1602045 Size: SH
  15. Remove the bolts holding the engine mount to the engine.

    16. Object Number: 1602052 Size: SH
  16. Remove the 2 through-bolts for the engine mount frame bracket.
  17. Remove the engine mount frame bracket.
  18. Remove the engine mount.

Installation Procedure

    Object Number: 1602052 Size: SH
  1. Position the engine mount frame bracket on the frame. Do not install the bolts.
  2. Install the engine mount.
  3. Perform the following procedure prior to installing the engine mount bracket bolts.
    4. 3.1. Remove all traces of the original adhesive patch.
    3.2. Clean the threads of the bolt with denatured alcohol or equivalent and allow to dry.
    3.3. Apply threadlocker GM P/N 12345382 (Canadian P/N 10953489) or equivalent to the bolts.

    Notice: Refer to Fastener Notice in the Preface section.

  4. Install the 2 through-bolts.

    5. Tighten
    Tighten the through-bolts to 75 N·m (55 lb ft).


    Object Number: 1602045 Size: SH
  5. Install the bolts holding the engine mount to the engine.

    6. Tighten
    Tighten the engine mount bolts to 58 N·m (43 lb ft).

  6. Lower the engine.
  7. If 4WD vehicle, remove the chain from the front of the engine.
  8. If 4WD vehicle, install the generator mounting bracket and the power steering mount bracket bolt.

    9. Tighten
    Tighten the mounting bracket bolts to 50 N·m (37 lb ft).


    Object Number: 657626 Size: SH
  9. Install the 3 bolts holding the engine mount to the engine mount frame bracket.

    10. Tighten
    Tighten the engine mount to engine mount frame bracket bolts to 65 N·m (48 lb ft).


    Object Number: 686706 Size: SH
  10. If RWD vehicle with an automatic transmission, install the bolt for the transmission oil cooler line bracket.

    11. Tighten
    Tighten the transmission oil cooler line bracket bolt to 9 N·m (80 lb in).


    Object Number: 310119 Size: SH
  11. Install the engine protection shield and bolts.

    12. Tighten
    Tighten the engine protection shield bolts to 20 N·m (15 lb ft).


    Object Number: 309158 Size: SH
  12. Install the oil pan skid plate.

    13. Tighten
    Tighten the bolts to 20 N·m (15 lb ft).

  13. Install the right front tire and wheel. Refer to Tire and Wheel Removal and Installation .
  14. Install the front fender wheelhouse inner panel.
  15. Install the starter motor. Refer to Starter Motor Replacement.
  16. Lower the vehicle.