GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

    Caution: Unless directed otherwise, the ignition and start switch must be in the OFF or LOCK position, and all electrical loads must be OFF before servicing any electrical component. Disconnect the negative battery cable to prevent an electrical spark should a tool or equipment come in contact with an exposed electrical terminal. Failure to follow these precautions may result in personal injury and/or damage to the vehicle or its components.

  1. Disconnect the negative battery cable.
  2. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  3. Drain the engine oil.
  4. Remove the lower oil pan. Refer to Oil Pan Replacement .
  5. Remove the upper oil pan. Refer to Oil Pan Replacement .

  6. Object Number: 159475  Size: SH
  7. Remove the oil baffle bolts.
  8. Remove the oil baffle.

Installation Procedure


    Object Number: 159475  Size: SH
  1. Install the oil baffle.
  2. 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.

  3. Install the oil baffle bolts.
  4. Tighten
    Tighten the oil baffle bolts to 8 N·m (71 lb in).

  5. Install the upper oil pan housing. Refer to Oil Pan Replacement .
  6. Install the lower oil pan. Refer to Oil Pan Replacement .
  7. Lower the vehicle.
  8. Refill the engine oil. Refer to Approximate Fluid Capacities .
  9. Connect the negative battery cable.
  10. Reprogram the applicable accessories. Refer to Reprogramming Accessories After Battery Disconnect in Engine Electrical.