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HOMESERVICE MANUALSGMC1999FORWARD CONTROL 5.7 R, AUTOMATICREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 827 (POWER SEAT SYSTEM)REPAIR INSTRUCTIONSSEAT ADJUSTER REPLACEMENT - FRONT (SIX-WAY POWER)REMOVAL 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 2002 Pontiac Grand Prix. However, it is still accessible from the selected car via links, so may be relevant.
  1. Remove the front seat from the vehicle. Refer to Seat Replacement - Front Bucket .
  2. Remove the seat belt buckle nut.

    Remove the seat belt from the seat.

  3. Remove the J-hooks holding the seat trim cover to the seat frame.
  4. Remove the front seat trim panel. Refer to Trim Panel Replacement - Front Seat .
    Fig 1: Removing Seat Belt From Seat
    G01617315Courtesy of GENERAL MOTORS CORP.
  5. Position the seat back all the way down.
  6. Lift up on the cushion trim cover and pad to access the seat frame to adjuster bolts.
  7. Remove the adjuster to seat cushion frame bolts.
  8. Disconnect the electrical harness from the adjuster cross brace.
  9. Disconnect the seat belt electrical harness, drivers seat only.
  10. Disconnect the electrical harness from the 3 electric motors.
  11. Remove the lumbar adjuster relays from the motor bracket.
  12. Remove the adjuster from the seat cushion frame.
  13. Remove the seat adjuster motor assembly from the seat adjuster. Refer to Seat Adjuster Motor Replacement - Front .
  14. Separate the left and right adjusters by removing the crossbrace bolts and the crossbrace.
    Fig 2: Seat Adjuster
    G01617316Courtesy of GENERAL MOTORS CORP.
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.