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 BUMPERREMOVAL PROCEDURE

1999 GMC Forward Control 5.7 R, Automatic

Removal Procedure

1999 GMC Forward Control 5.7 R, AutomaticSECTION Removal 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.

Remove the front bumper fascia. Refer to Fascia Replacement - Front Bumper - Upper (Aztek) or Fascia Replacement - Front Bumper - Upper (Rendezvous) .
Remove the energy absorber. Refer to Energy Absorber Replacement - Front (Aztek) or Energy Absorber Replacement - Front (Rendezvous) .
Remove the bolt from the upper inboard impact bar through the access hole in the radiator support.

Fig 1: Cross Sectional View Of Upper Inboard Impact Bolt
Courtesy of GENERAL MOTORS CORP.
Disconnect the electrical connector from the horn.
Remove the horns from the impact bar.

Fig 2: Locating Horns Mounting Bolts
Courtesy of GENERAL MOTORS CORP.
Remove the remainder of the impact bar bolts.

Fig 3: View Of Impact Bar Bolts
Courtesy of GENERAL MOTORS CORP.
Remove the impact bar.

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.