GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

  1. Refer to grille assembly. Refer to Grille Replacement in Body Accessories.
  2. Remove the two nuts securing the two cooler lines to the oil cooler.

  3. Object Number: 396819  Size: SH
  4. For vehicles not equipped with the 4.3L engine, remove the four bolts securing the auxiliary oil cooler to the radiator support.

  5. Object Number: 396821  Size: SH
  6. For vehicles equipped with the 4.3L engine, remove the four bolts securing the auxiliary oil cooler to the radiator support.

Installation Procedure


    Object Number: 396819  Size: SH

    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.

  1. For vehicles not equipped with the 4.3L engine, install the four bolts securing the oil cooler to the radiator support.
  2. Tighten
    Tighten the bolts to 10 N·m (89 lb in).


    Object Number: 396821  Size: SH
  3. For vehicles equipped with the 4.3L engine, install the four bolts securing the oil cooler to the radiator support.
  4. Tighten
    Tighten the bolts to 10 N·m (89 lb in).

  5. Reinstall the grille assembly. Refer to Grille Replacement in Body and Accessories.
  6. Check the transmission fluid level and add as required.