Safety Warning

DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.

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HOMESERVICE MANUALSGMC1999FORWARD CONTROL 5.7 R, AUTOMATICREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 557 (BUMPER SYSTEM)REPAIR INSTRUCTIONSIMPACT BAR REPLACEMENT - FRONT BUMPERINSTALLATION PROCEDURE

1999 GMC Forward Control 5.7 R, Automatic

Installation Procedure

1999 GMC Forward Control 5.7 R, AutomaticSECTION Installation Procedure

WARNING: This page is about a different car, the 2004 Pontiac Aztek and 2004 Buick Rendezvous. However, it is still accessible from the selected car via links, so may be relevant.

IMPORTANT: Position the left side first, then the right side.

Position the impact bar to the body using the alignment pin for location.
NOTE: Refer to Fastener Notice in Cautions and Notices.
Install the bolts to secure the impact bar to the front bumper.
Tighten: Tighten the bolts to 25 N.m (18 lb ft).

Fig 1: View Of Impact Bar Bolts
Courtesy of GENERAL MOTORS CORP.
Through the access hole in the radiator support, install the bolt to secure the impact bar to the front bumper.
Tighten: Tighten the bolt to 50 N.m (37 lb ft).
Install the horn to the impact bar.

Fig 2: Locating Horns Mounting Bolts
Courtesy of GENERAL MOTORS CORP.
Install the impact bar bolt to the horn.
Tighten: Tighten the bolt to 50 N.m (37 lb ft).

Fig 3: Cross Sectional View Of Upper Inboard Impact Bar Bolt
Courtesy of GENERAL MOTORS CORP.
Connect the electrical connector to the horn.
Install the energy absorber. Refer to Energy Absorber Replacement - Front (Aztek) or Energy Absorber Replacement - Front (Rendezvous) .
Install the front bumper fascia. Refer to Fascia Replacement - Front Bumper - Upper (Aztek) or Fascia Replacement - Front Bumper - Upper (Rendezvous) .

RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.
• Brakes feel soft, pull hard to one side, or make grinding noises.
• The engine overheats, stalls repeatedly, or misfires under load.
• You are missing required tools, torque specs, or safe lifting equipment.
• You are not confident in the next step or safety outcome.