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HOMESERVICE MANUALSGMC1999FORWARD CONTROL 5.7 R, AUTOMATICREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 743 (SEAT SYSTEM)REPAIR INSTRUCTIONSSEAT REPLACEMENT (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 2004 Chevrolet Corvette. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: Sunroof View
    GM63735Courtesy of GENERAL MOTORS CORP.
  1. Place a protective cover over the sill plate and door trim panel and/or remove the roof lift off panel (coupe), or lower the folding top (convertible), to provide additional space for seat removal.
  2. Tilt the steering wheel full up.
    3. Fig 2: Seat Mounting Component View
    GM71215Courtesy of GENERAL MOTORS CORP.
  3. Position the seat rearward.
  4. Remove the push pins and covers from the front of the adjuster legs.
  5. Remove the nuts from the front of the adjuster legs.
    6. Fig 3: Seat Electrical Connector
    GM71218Courtesy of GENERAL MOTORS CORP.
  6. Position the seat forward. If the rear adjuster nuts are accessible skip to step 9. If the seat will not move and the rear adjuster nuts are not accessible determine if the motor or the adjuster is the cause and perform step 7 or 8.
  7. If the power seat motor is inoperative and the rear adjuster nuts are not accessible perform the following steps.
    1. Power up and raise the front of the power seat to gain access to the forward motor bracket.
    2. Reach under the seat and cut the tie strap attaching the front motor bracket to the torque tube.
    3. Bend the bracket ends inward and slide the bracket off the adjuster transmissions.
    4. Pull the forward motor cables from the adjusters.
    5. Insert one end of a removed cable into a low speed drill and insert the other end into the adjuster.
    6. With the low speed drill move the adjuster forward, alternating sides, until the rear adjuster nuts are exposed.
    8. Fig 4: Seat Belt Harness Rosebud Clip & Electrical Connectors
    GM171509Courtesy of GENERAL MOTORS CORP.
  8. If the seat adjuster is inoperative and the rear adjuster nuts are not accessible perform the following steps:
    1. Remove the recliner handle. Refer to Seat Back Recliner Handle Replacement - Front .
    2. Remove the seat side trim panel. Refer to Trim Panel Replacement - Front Seat .
    3. Reach under the seat cushion and cut the seat cover tie string (1) at the front center of the seat cushion.
    4. Lift the seat cushion cover and foam to access the 4 seat cushion to frame attaching bolts.
    5. Remove the seat cushion to frame attaching bolts.
    6. Cut the tie straps mounting the lumbar pump pouch and reposition the pump and pouch up through the seat support wires.
    7. Remove the memory seat control module from the seat.
    8. Disconnect the seat belt harness rosebud clip (drivers seat).
    9. Disconnect the electrical connectors.
    10. Remove the seat.
    9. Fig 5: Seat Electrical Connector
    GM71218Courtesy of GENERAL MOTORS CORP.
  9. Remove the nuts attaching the rear adjuster legs.
  10. Disconnect the seat electrical connector.
  11. Remove the seat and/or the adjuster.
  12. Transfer parts as necessary.
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.