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 842 (SEATS)REPAIR INSTRUCTIONSSEAT ADJUSTER REPLACEMENT - FRONT (4-WAY)INSTALLATION 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 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Seat Riser Bar

Courtesy of GENERAL MOTORS CORP.

Install the seat riser bar.

Fig 2: Seat Cushion Frame Assembly

Courtesy of GENERAL MOTORS CORP.

Position the seat cushion frame assembly between the adjusters.

NOTE: Refer to FASTENER NOTICE in Cautions and Notices.

Install the seat cushion frame bolts.
Tighten: Tighten the bolts to 12 N.m (9 lb ft).
Position the seat back frame assembly between the adjusters. Ensure that the locating triangles in the frame are properly seated in the mating holes in the adjusters.

Fig 3: Outboard Teardrop Washer & Bolt

Courtesy of GENERAL MOTORS CORP.

If equipped, install the outboard teardrop washer and bolt.
Tighten: Tighten the bolt to 35 N.m (26 lb ft).
Install the outboard seat back frame nuts.
Tighten: Tighten the nuts to 17 N.m (13 lb ft).
Install the inboard seat back frame nuts.
Tighten: Tighten the nuts to 17 N.m (13 lb ft).
If you loosened the rear bolts on the seat cushion frame during removal, tighten them now.
Tighten: Tighten the bolts to 12 N.m (9 lb ft).

Fig 4: Recliner Handle

Courtesy of GENERAL MOTORS CORP.

RENDER: 1.0x

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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.