GM Service Manual Online
For 1990-2009 cars only

Engine Mount Replacement Front, RWD

Removal Procedure

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.
  2. 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. Due to the small clearance between the oil pan and the oil pump screen, jacking against the oil pan may cause the pan to be bent against the pump screen. This will result in a damaged oil pickup unit.


    Object Number: 4564  Size: SH
  3. Remove the mounting through bolts on both sides of the engine.
  4. Raise the engine and block it into position.

  5. Object Number: 4567  Size: SH
  6. Remove the mounting to frame bolts and nuts.

  7. Object Number: 4568  Size: SH
  8. Remove the engine mounting.

Installation Procedure


    Object Number: 4568  Size: SH
  1. Install the engine mounting to the frame.

  2. Object Number: 4567  Size: SH
  3. Install the engine to frame bolts and nuts.
  4. Tighten

        • Tighten the bolts to 59 N·m (44 lb ft).
        • Tighten the nuts to 45 N·m (33 lb ft).

    Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  5. Lower the engine.

  6. Object Number: 4564  Size: SH
  7. Install the mounting through bolts and nuts.
  8. Tighten

        • Tighten the bolts to 95 N·m (70 lb ft).
        • Tighten the nuts to 68 N·m (50 lb ft).

    Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  9. Lower the vehicle.

Engine Mount Replacement Front, 4WD

Removal Procedure

    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.
  2. 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. Due to the small clearance between the oil pan and the oil pump screen, jacking against the oil pan may cause the pan to be bent against the pump screen. This will result in a damaged oil pickup unit.


    Object Number: 4564  Size: SH
  3. Remove the mount through bolts on both sides of the engine.
  4. Raise the engine and block into position.

  5. Object Number: 4565  Size: SH
  6. Remove the mount to frame bolts.

  7. Object Number: 4566  Size: SH
  8. Remove the engine mount.

Installation Procedure


    Object Number: 4566  Size: SH
  1. Install the engine mounting to the frame.

  2. Object Number: 4565  Size: SH
  3. Install the engine mount to frame bolts and nuts.
  4. Tighten

        • Tighten the bolts to 59 N·m (44 lb ft).
        • Tighten the nuts to 45 N·m (33 lb ft).

    Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  5. Lower the engine.

  6. Object Number: 4564  Size: SH
  7. Install the mounting through bolts and nuts.
  8. Tighten

        • Tighten the bolts to 95 N·m (70 lb ft).
        • Tighten the nuts to 68 N·m (50  lb  ft).

    Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  9. Lower the vehicle.

Engine Mount Replacement Rear, RWD

Removal Procedure

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. Support the transmission in order to relieve the weight from the mount.

  2. Object Number: 4569  Size: SH
  3. Remove the mounting to the crossmember nut and washer.

  4. Object Number: 4570  Size: SH
  5. Remove the mount to transmission bolts and washers.
  6. Raise the transmission just enough in order to permit the removal of the mount.

  7. Object Number: 4571  Size: SH
  8. Remove the mount.

Installation Procedure


    Object Number: 4571  Size: SH
  1. Install the mount.

  2. Object Number: 4570  Size: SH
  3. Install the mounting to transmission bolts and washers.
  4. Lower the transmission.

  5. Object Number: 4569  Size: SH
  6. Install the mount to cross member nut and washer.
  7. Tighten

        • Tighten the nut to 47 N·m (35 lb ft).
        • Tighten the bolt to 53 N·m (39 lb ft).

    Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

Engine Mount Replacement Rear 4WD

Removal Procedure

    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. Support the transmission in order to relieve the weight from the mount.

  2. Object Number: 4574  Size: SH
  3. Remove the mounting to the crossmember nuts and washers.

  4. Object Number: 1303  Size: SH
  5. Remove the mount to transmission bolts and washers.
  6. Raise the transmission just enough in order to permit the removal of the mounting.

  7. Object Number: 4575  Size: SH
  8. Remove the mount.

Installation Procedure


    Object Number: 4575  Size: SH
  1. Install the mounting.

  2. Object Number: 1303  Size: SH
  3. Install the mounting to transmission bolts and washers.
  4. Tighten
    Tighten the bolts to 54 N·m (40 lb ft).

  5. Lower the transmission.

  6. Object Number: 4574  Size: SH
  7. Install the mount to cross member nuts and washers.
  8. Tighten
    Tighten the nuts to 47 N·m (35 lb ft).