GM Service Manual Online
For 1990-2009 cars only

Inspection Procedure

Notice: In order to avoid oil pan damage and possible engine failure, insert a block of wood that spans the width of the oil pan bottom between the oil pan and the jack support.

    Important: Before replacing any engine mount due to suspected fluid loss, make sure that the source of the fluid is the mount, not the engine or accessories.

  1. Raise the engine in order to remove the weight from the engine mount and in order to place slight tension in the rubber.
  2. Observe the engine mount while raising the engine. If the engine mount exhibits any of the following conditions, replace it.
  3. • The hard rubber surface is covered with heat check cracks.
    • The rubber is separated from the metal plate of the engine mount.
    • The rubber is split through the center of the engine mount.
  4. If there is movement between the metal plate of the engine mount and its attaching points, lower the engine on the engine mount. Tighten the bolts or nuts attaching the engine mount to the frame or bracket.