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HOMESERVICE MANUALSCHEVROLET2001CHEVY EXPRESS G2500, VAN CARGO EXTENDED, 5.7 R, L31/KL8REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 716 (SEAT SYSTEM)REPAIR INSTRUCTIONSLUMBAR BLADDER REPLACEMENTREMOVAL PROCEDURE
2001 Chevrolet Chevy Express G2500, Van Cargo Extended, 5.7 R, L31/KL8

Removal Procedure

2001 Chevrolet Chevy Express G2500, Van Cargo Extended, 5.7 R, L31/KL8SECTION 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 lumbar bladders and bolster bladders are serviced as 1 lumbar/lateral bladder system. The bladder system is serviced separate from the module assembly. The bladder service part is supplied with the necessary connector fittings. The bladder to module hoses are labeled #3, #4, and #5 to aid in assembly.

    Fig 1: Seat Mounting Component View
    GM71215Courtesy of GENERAL MOTORS CORP.
  1. Raise the seat to the full up position.
  2. Remove the seat. Refer to Seat Replacement (Power)  or Seat Replacement (Manual) .
  3. Remove the seat cushion cover and pad. Refer to Seat Cushion Trim Cover and Pad Replacement .
    4. Fig 2: Pillow To Seat Frame
    GM282000Courtesy of GENERAL MOTORS CORP.
  4. Unhook the J strip attaching the bottom of the seat back insert pillow.
  5. Remove the 2 fir tree fasteners attaching the upper sides of the insert pillow.
  6. Unzip the upper insert pillow zipper.
  7. Remove the seat back insert pillow.
  8. Remove the 4 lower fir tree fasteners attaching the seat back cover.
  9. Peel the trim cover from the bolsters and reposition the trim up over the top of the seat back. (trim will be inside out).
  10. Peel the foam pad from the bolsters and reposition to expose the lumbar system.
    11. Fig 3: Lumbar/Lateral Bladder System To Seat Back
    GM339493Courtesy of GENERAL MOTORS CORP.
  11. Remove the lumbar/lateral bladder system from the seat back.
    12. Fig 4: Lumbar Pump & Module To Seat Frame & Seat Back
    GM339492Courtesy of GENERAL MOTORS CORP.
  12. Remove the control module J strips from the seat support wires.
  13. Reposition the control module to the top of the seat support wires. (It is not necessary to remove the lumbar pump).
    14. Fig 5: Control Module To Lumbar/Lateral Bladders
    GM423944Courtesy of GENERAL MOTORS CORP.
  14. Cut the three hoses (4) connecting the control module to the lumbar/lateral bladders 75 mm (3 in) from the control module.
    15. Fig 6: Lumbar/Lateral Bladder System To Seat Back
    GM339493Courtesy of GENERAL MOTORS CORP.
  15. Remove the tie strap attaching the hoses to the seat frame.
  16. Remove the lumbar/lateral bladder assembly.
RENDER: 1.0x

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