Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET1998SUBURBAN K2500, 7.4 J, PART TIMEREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 730 (SEAT SYSTEM)REPAIR INSTRUCTIONSLUMBAR BLADDER REPLACEMENTINSTALLATION PROCEDURE
1998 Chevrolet Suburban K2500, 7.4 J, Part Time
Installation Procedure
1998 Chevrolet Suburban K2500, 7.4 J, Part TimeSECTION Installation Procedure
WARNING: This page is about a different car, the 2003 Chevrolet Corvette. However, it is still accessible from the selected car via links, so may be relevant.
- Position the lumbar/lateral support bladders to the seat back inserting the tabs into the seat back.
- Route the hoses through the pivot area and tie strap them to the seat frame under the seat back adjuster.
- Connect the seat switch to the harness.
- Connect power to the seat.
It may be necessary to position the seat in the vehicle.
- Operate the upper lumbar control and use the procedure in step eight to connect the hose that pressurized to the bladder hose labeled #3.
- Operate the lower lumbar control and use the procedure in step eight to connect the hose that pressurized to the bladder hose labeled #4.
- Operate the bolster control and use the procedure in step eight to connect the hose that pressurized to the bladder hose labeled #5.
- Using Loctite™ 406, or equivalent, glue the module hoses to the fittings on the bladder hoses (4).
- Position the hose so it is just over the edge of the barb on the attaching fitting.
- Apply the adhesive completely around the fitting.
- Quickly push the hose the rest of the way onto the fitting.
- Install the control module to the seat support wires with the J strips.
- Disconnect the seat electrical connector and remove the seat from the vehicle (if reposition inside the vehicle in step 4.
- Install the seat cushion cover. Refer to SEAT CUSHION TRIM COVER AND PAD REPLACEMENT .
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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.