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HOMESERVICE MANUALSGMC1999FORWARD CONTROL 5.7 R, AUTOMATICREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 743 (SEAT SYSTEM)REPAIR INSTRUCTIONSSEAT ADJUSTER MOTOR REPLACEMENT - FRONTREMOVAL 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 Chevrolet Corvette. However, it is still accessible from the selected car via links, so may be relevant.

The power seat motors are only available as an assembly with the adjusters. To replace the assembly follow the procedure to replace the adjuster. Refer to Seat Adjuster Replacement - Front .

    Fig 1: Seat Mounting Component View
    GM71215Courtesy of GENERAL MOTORS CORP.
  1. Remove the seat. Refer to Seat Replacement (Power)  or Seat Replacement (Manual) .
    2. Fig 2: Seat Electrical Connector
    GM71218Courtesy of GENERAL MOTORS CORP.
  2. Remove or reposition the lumbar pump, if equipped.

    Remove the tie straps attaching the pump to the torque tube and reposition the pump.

  3. Slide the front motor bracket to one side.
  4. Remove that drive cable.
  5. Slide the bracket off that adjuster transmission.
  6. Slide the bracket in the opposite direction and remove the drive cable and the bracket from that adjuster transmission.
  7. Position the bracket outward.
  8. Disconnect the motor electrical harness connector.
  9. Remove the front motor.
  10. Mark the location and position of the rear motors to aid in installation.
  11. Remove the motors with harness.
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.