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 MANUALSGMC2009CANYON 4D PICKUP, 2.9 9REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT VARIANT/TRIMSECTION 12 (ENGINE CONTROL SYSTEM & FUEL SYSTEM - 5.3L - DTC P0315 TO DTC P1255)DTC P0650CIRCUIT/SYSTEM TESTING
2009 GMC Canyon 4D Pickup, 2.9 9
Circuit/System Testing
2009 GMC Canyon 4D Pickup, 2.9 9SECTION Circuit/System Testing
WARNING: This page is about a different variant/trim than selected.
- Ignition ON, verify that the instrument panel cluster (IPC) warning indicators are illuminated.
- If the IPC warning indicators are not illuminated, test the ignition circuit for a sort to ground or an open/high resistance. If the circuit tests normal and the ignition circuit fuse is open, replace the IPC.
- Ignition OFF, disconnect connector X1 at the ECM.
- Ignition ON, verify the MIL is not illuminated.
- If the MIL is illuminated, inspect the MIL control circuit for a short to ground. If the circuit tests normal, replace the IPC.
- Ignition ON, verify that the MIL illuminates with a 3A fused jumper between the MIL control circuit, ECM terminal X1-68, and ground.
- If the MIL does not illuminate, test the MIL control circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the ECM.
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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.