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.
Circuit/System Verification
2006 Chevrolet Suburban K2500, 6.0 USECTION Circuit/System Verification
WARNING: This page is about a different car, the 2010 GMC Sierra, 2010 GMC Cab & Chassis Sierra, 2010 Chevrolet Silverado, and 2010 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
- Ignition ON, verify that all manual power seat functions operate when being controlled by the seat adjuster switches.
- If all seat functions do not operate, refer to Power Seat Inoperative (Without Memory A45) or Power Seat Inoperative (With Memory A45) .
- Ignition ON, observe the scan tool Driver Position Module lumbar switch parameters while pressing the appropriate lumbar switch. The reading should change between Inactive and Active.
- If the reading does not change between the specified values, refer to the Lumbar Switch Circuit Test.
- If all lumbar switch inputs to the MSM function normal, refer to the Lumbar 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.