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HOMESERVICE MANUALSCHEVROLET2001CAVALIER LS, 2.4 TREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 285 (SEAT SYSTEM)REPAIR INSTRUCTIONSLUMBAR PUMP REPLACEMENTINSTALLATION PROCEDURE
2001 Chevrolet Cavalier LS, 2.4 T

Installation Procedure

2001 Chevrolet Cavalier LS, 2.4 TSECTION Installation 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: Lumbar Pump & Module To Seat Frame & Seat Back
    GM339492Courtesy of GENERAL MOTORS CORP.
  1. Lay the new pump and control module assembly on top of the seat spring assembly.
  2. Apply a very small amount of air (blow into the hose) to each of the three lumbar bladder hoses that were cut in step 8.
    • If the upper lumbar inflates, use the procedure in step three to connect that hose to the hose labeled #3 on the new pump.
    • If the lower lumbar inflates, use the procedure in step three to connect that hose to the hose labeled #4 on the new pump.
    • If the bolsters inflate, use the procedure in step three to connect that hose to the hose labeled #5 on the new pump.
    3. Fig 2: Control Module To Bladder Air Hoses
    GM423945Courtesy of GENERAL MOTORS CORP.
  3. Using Loctite™ 406, or equivalent, glue each hose to the fitting (2) in the module hose.
    1. Position the hose so it is just over the edge of the barb on the attaching fitting.
    2. Apply the adhesive completely around the fitting.
    3. Quickly push the hose the rest of the way onto the fitting.
    4. Fig 3: Control Module To Seat Cushion Support Wires
    GM339496Courtesy of GENERAL MOTORS CORP.
  4. Insert the pump and the control module down under the seat support wires.
  5. Attach the control module with the J strips facing outward to the underside of the seat cushion support wires.
  6. Connect the electrical connector to the control module.
  7. Tie strap the pump to the torque tube (4) under the front of the seat.
    8. Fig 4: Seat Mounting Component View
    GM71215Courtesy of GENERAL MOTORS CORP.
  8. Install the seat cushion trim cover. Refer to Seat Cushion Trim Cover and Pad Replacement .
  9. Install the seat. Refer to Seat Replacement (Power)  or Seat Replacement (Manual) .
RENDER: 1.0x

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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.