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 MANUALSCHEVROLET2008UPLANDER LT, 3.9 1REPAIR AND DIAGNOSIS (SINGLE PAGE)BODY & FRAMESEATSPOWER SEAT SYSTEMDIAGNOSTIC INFORMATION AND PROCEDURESDTC 024 OR 034CIRCUIT/SYSTEM TESTING
2008 Chevrolet Uplander LT, 3.9 1
Circuit/System Testing
2008 Chevrolet Uplander LT, 3.9 1SECTION Circuit/System Testing
- Ignition OFF, disconnect the harness connector at the swivel motor.
- Test for less than 1 ohm of resistance between the ground circuit terminal 4 and ground.
- If greater than the specified range, test the ground circuit for an open/high resistance.
- Ignition ON, test for B+ between the signal circuit terminal 6 and ground.
- If less than specified range, test the supply voltage circuit for a short to ground or an open/high resistance. If the circuit test normal, replace the seat control module.
- Test for greater than 3 volts between the signal circuit terminal 5 and ground.
- If less than specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit test normal, replace the seat control module.
- If all circuits test normal, test and replace the swivel motor.
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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.