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HOMESERVICE MANUALSCHEVROLET2008CHEVY EXPRESS G3500, VAN PASSENGER EXTENDEDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 228 (POWER SEAT SYSTEM)REPAIR INSTRUCTIONSFRONT SEAT LUMBAR SUPPORT REPLACEMENT
2008 Chevrolet Chevy Express G3500, Van Passenger Extended

Front Seat Lumbar Support Replacement

2008 Chevrolet Chevy Express G3500, Van Passenger ExtendedSECTION Front Seat Lumbar Support Replacement
WARNING: This page is about a different car, the 2008 Cadillac STS. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Front Seat Lumbar Support
GM1702655Courtesy of GENERAL MOTORS CORP.
Callout Component Name

Preliminary Procedure

  1. Remove the seat back panel. Refer to Front Seat Back Panel Replacement .
  2. Remove the head restraint. Refer to Front Seat Head Restraint Replacement .
  3. Remove the head restraint guides. Refer to Front Seat Head Restraint Guide Replacement .
  4. Remove the seat back speaker grilles. Refer to Front Seat Speaker Replacement .
  5. Remove the seat back cushion cover and pad. Refer to Front Seat Cushion Cover and Pad Replacement .
1 Seat Back Cushion Pad and Cover
Refer to Front Seat Cushion Cover and Pad Replacement .
2 Front Seat Back Lumbar
Tip: 
  1. Disconnect the electrical connectors.
  2. Pull the bottom of the lumbar assembly forward to disengage the lower two retainers, then slide downward to remove.
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.