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HOMESERVICE MANUALSCHEVROLET2001CHEVY EXPRESS G3500, VAN PASSENGER EXTENDED, 6.5 FREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 716 (SEAT SYSTEM)REPAIR INSTRUCTIONSLUMBAR BLADDER REPLACEMENTINSTALLATION PROCEDURE
2001 Chevrolet Chevy Express G3500, Van Passenger Extended, 6.5 F

Installation Procedure

2001 Chevrolet Chevy Express G3500, Van Passenger Extended, 6.5 FSECTION 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/Lateral Bladder System To Seat Back
    GM339493Courtesy of GENERAL MOTORS CORP.
  1. Position the lumbar/lateral support bladders to the seat back inserting the tabs into the seat back.
  2. Route the hoses through the pivot area and tie strap them to the seat frame under the seat back adjuster.
  3. Connect the seat switch to the harness.
  4. Connect power to the seat.

    It may be necessary to position the seat in the vehicle.

  5. Operate the upper lumbar control and use the procedure in step eight to connect the hose that pressurized to the bladder hose labeled #3.
  6. Operate the lower lumbar control and use the procedure in step eight to connect the hose that pressurized to the bladder hose labeled #4.
  7. Operate the bolster control and use the procedure in step eight to connect the hose that pressurized to the bladder hose labeled #5.
    8. Fig 2: Control Module To Lumbar/Lateral Bladders
    GM423944Courtesy of GENERAL MOTORS CORP.
  8. Using Loctite™ 406, or equivalent, glue the module hoses to the fittings on the bladder hoses (4).
    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.
  9. Install the control module to the seat support wires with the J strips.
  10. Disconnect the seat electrical connector and remove the seat from the vehicle (if reposition inside the vehicle in step 4.
  11. Install the seat cushion cover. Refer to Seat Cushion Trim Cover and Pad Replacement .
    12. Fig 3: Pillow To Seat Frame
    GM282000Courtesy of GENERAL MOTORS CORP.
  12. Install the seat back foam pad over the bolsters.
  13. Install the seat back cover over the bolsters.
  14. Attach the cover and the bladder assembly with the four lower fir tree fasteners.
  15. Zip the upper seat back zipper closed.
  16. Tuck the cover over the corners of the hinges.
  17. Install the insert pillow. Refer to Seat Back Trim Replacement - Front .
    18. Fig 4: Seat Mounting Component View
    GM71215Courtesy of GENERAL MOTORS CORP.
  18. 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.