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
2010 GMC Savana Special 4.8 ASECTION Circuit/System Verification
- Ignition ON, observe the DTC information with the scan tool.
- Verify that DTC C0292 has not set. If DTC C0292 has set, refer to Diagnostic Trouble Code (DTC) List - Vehicle .
- Ignition OFF, disconnect the steering wheel position sensor (SWPS) connector.
- Ignition OFF, test for less than 1 ohm of resistance between the low reference circuit terminal 2 and ground.
- If greater than 1 ohm, test the low reference circuit and the EBCM ground circuit terminals 1 and 25 for a short to voltage or an open/high resistance. If the circuits test normal, replace the EBCM.
- Test the signal phase A circuit terminal 3, signal phase B circuit terminal 4, and 5-volt reference circuit terminal 1, and the low reference circuit terminal 8 for an open/high resistance or a short to voltage or ground.
- If all circuits test normal, replace the SWPS.
- If the DTC sets again after replacing the SWPS, replace the EBCM.
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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.