GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 1999 🢒 GMC K Sierra - 4WD 🢒 Restraints 🢒 SIR 🢒 Front Bumper Replacement

Removal Procedure
  1. Remove the front grille. Refer to Grille Replacement in Exterior Trim.

    2. Object Number: 379248 Size: SH
  2. Remove the retaining bolts (1,2) from the front bumper.
  3. Remove the brace bolt (3) from the front bumper.
  4. Remove the front bumper assembly from the vehicle.
  5. Remove the air deflector from the bumper if necessary. Refer to Front Bumper Fascia Air Deflector Replacement .

    6. Object Number: 373577 Size: SH
  6. Disconnect the electrical connector from the fog lamps, if equipped.

Installation Procedure

    Object Number: 373577 Size: SH
  1. Connect the electrical connector to the fog lamps, if equipped.
  2. Install the air deflector to the bumper if necessary. Refer to Front Bumper Fascia Air Deflector Replacement .
  3. Position the front bumper assembly on the vehicle.

    4. Object Number: 379248 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.

    Important: Tighten the bolts in the following sequence.

  4. Install the retaining bolts (1,2) to the front bumper.

    5. Tighten

    1. Tighten the bracket bolt (1) to 85 N·m (63 lb ft).
    2. Tighten the bracket bolt (2) to 85 N·m (63 lb ft).
    3. Tighten the brace bolt to 55 N·m (41 lb ft).
  5. Install the front grille Refer to Grille Replacement in Exterior Trim.