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 MANUALSCHEVROLET2001CAVALIER LS, 2.4 TREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 285 (SEAT SYSTEM)DIAGNOSTIC INFORMATION AND PROCEDURESLUMBAR SUPPORT INOPERATIVE
2001 Chevrolet Cavalier LS, 2.4 T
Lumbar Support Inoperative
2001 Chevrolet Cavalier LS, 2.4 TSECTION Lumbar Support Inoperative
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.
Lumbar Support Inoperative
| Step | Action | Yes | No |
|---|---|---|---|
| Schematic Reference: Lumbar Support Schematics | |||
| 1 | Did you review the lumbar Support Description and Operation and perform the necessary inspections? | Go to Step 2 | Go to Symptoms - Seats |
| 2 | Attempt to inflate and deflate all of the lumbar support and side bladders. Do all of the lumbar support and side bladders operate properly? |
Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 3 |
| 3 | Are all of the driver or passenger lumbar support functions inoperative? | Go to Step 4 | Go to Step 6 |
| 4 | Test and repair the positive voltage supply circuits to the seat adjuster switch and the lumbar pump for the following conditions:
Refer to Circuit Testing and Wiring Repairs or Connector Repairs in Wiring Systems. Did you find and correct the condition? |
Go to Step 11 | Go to Step 5 |
| 5 | Test and repair the ground circuit to the lumbar pump assembly for an open or high resistance. Refer to Circuit Testing
and Wiring Repairs
or Connector Repairs
in Wiring Systems. Did you find and correct the condition? |
Go to Step 11 | Go to Step 6 |
| 6 |
|
Go to Step 8 | Go to Step 7 |
| 7 | Test and repair the inoperative lumbar relay control circuit for an open or high resistance. Refer to Circuit Testing
and Wiring Repairs
or Connector Repairs
in Wiring Systems. Did you find and correct the condition? |
Go to Step 11 | Go to Step 9 |
| 8 | Replace the seat adjuster switch. Refer to Seat Switch Replacement - Power . is the repair complete? |
Go to Step 11 | - |
| 9 | Inspect and repair or replace the air lines or bladders for any leaking or restrictions. Refer to Lumbar Bladder Replacement . Did you find and correct the condition? |
Go to Step 11 | Go to Step 10 |
| 10 | Replace the lumbar pump. Refer to Lumbar Pump Replacement . Is the repair complete? |
Go to Step 11 | - |
| 11 | Operate the system in order to verify the repair. Did you correct the condition? |
System OK | Go to Step 3 |
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.