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 MANUALSCHEVROLET2006CHEVY EXPRESS G2500, VAN CARGO, 6.6 2REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1364 (POWER SEAT SYSTEM)DIAGNOSTIC INFORMATION AND PROCEDURESLUMBAR SUPPORT INOPERATIVE (WITH MEMORY A45)CIRCUIT/SYSTEM VERIFICATION
2006 Chevrolet Chevy Express G2500, Van Cargo, 6.6 2
Circuit/System Verification
2006 Chevrolet Chevy Express G2500, Van Cargo, 6.6 2SECTION Circuit/System Verification
WARNING: This page is about a different car, the 2008 Cadillac CTS. However, it is still accessible from the selected car via links, so may be relevant.
- Ignition ON, verify that none of the Memory Seat Module Lumbar Switch parameters are Active while the switch is in an inactive state.
- If either of the switch parameters is Active, refer to Lumbar Adjuster Switch Circuit Test .
- Observe the scan tool Lumbar Switch parameters while pressing the related lumbar switch. The reading should change between Inactive and Active.
- If not the specified value, refer to Lumbar Adjuster Switch Circuit Test .
- If the lumbar switch inputs to the MSM function normal, refer to Motor Control Circuit Test .
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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.