GM Service Manual Online
For 1990-2009 cars only

    Object Number: 315378  Size: SH

    Notice: Broken or deteriorated mounts can cause misalignment and destruction of certain drive train components. When a single mount breaks, the remaining mounts are subjected to abnormally high stresses.

  1. Raise the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  2. Inspect for loose or missing bolts at the following locations:
  3. • Engine mount bracket to engine
    • Engine mount frame bracket to frame
    • Engine mount to engine mount bracket
    • Engine mount to engine mount frame bracket
  4. Replace missing or loose bolts. Refer to Engine Mount Replacement .

  5. Object Number: 374320  Size: SH

    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.

  6. In order to access the square tab on the right side of the engine remove the starter. Refer to Starter Motor Replacement in Engine Electrical.
  7. In order to access the square tab on the left side of the engine for a Four Wheel Drive vehicle, remove the oil filter.
  8. Using a jack on the square tab at the rear of the engine block (left side shown) raise the engine in order to complete the following tasks:
  9. • Remove weight from the engine mount.
    • Place a slight tension on the rubber cushion.
    • Observe the engine mount while raising the engine.
  10. Replace the engine mount if the following conditions exist:
  11. • Heat check cracks cover the hard rubber surface.
    • The rubber cushion is separated from the metal plate of the engine mount.
    • There is a split through the rubber cushion.
  12. Replace the starter, if removed. Refer to Starter Motor Replacement in Engine Electrical.
  13. Replace the oil filter, if removed.