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.

SYS.OK|MANUAL.DB● LIVE

HOMESERVICE MANUALSGMC1999FORWARD CONTROL 5.7 R, AUTOMATICREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 520 (BUMPER SYSTEM)REPAIR INSTRUCTIONSBUMPER EXTENSION REPLACEMENT - REARINSTALLATION 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 2003 GMC Sonoma, 2003 GMC Jimmy, 2003 Chevrolet S10 Pickup, and 2003 Chevrolet Blazer. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: Refer to FASTENER NOTICE in Cautions and Notices.

Install the nuts that retain the rear bumper extension to the rear quarter panel.
Tighten

Tighten the rear bumper extension to the rear quarter panel nuts to 10 N.m (7 Ib. ft).
Install the screws securing the rear bumper extension to the wheelhouse panel.
The screws should be installed from the top to the bottom.

Tighten

Tighten the rear bumper extension to the wheelhouse screws to 1.9 N.m (17 Ib. in).
Install the bolt that retains the brace to the rear bumper extension.
Tighten

Tighten the brace to the rear bumper extension bolt to 10 N.m (7 Ib. ft).

Fig 1: Installing Nuts Retaining Rear Bumper Extension To Rear Quarter Panel
Courtesy of GENERAL MOTORS CORP.

RENDER: 1.0x

NO RELATED

Recommended Tools & Savings

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Affiliate disclosure: We may earn a commission at no extra cost to you.

Shop Manual-Ready Tools Free Quote Check Quote Shield Pro

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.