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 MANUALSGMC2010SAVANA SPECIAL 6.0 GREPAIR AND DIAGNOSIS (SINGLE PAGE)ACCESSORIES & EQUIPMENTWIPER/WASHER SYSTEMSWIPER SYSTEM & WASHER SYSTEMDIAGNOSTIC INFORMATION AND PROCEDURESWINDSHIELD WIPER SYSTEM MALFUNCTIONCIRCUIT/SYSTEM TESTINGWIPERS DO NOT PARK CIRCUIT TEST
2010 GMC Savana Special 6.0 G
Wipers Do Not Park Circuit Test
2010 GMC Savana Special 6.0 GSECTION Wipers Do Not Park Circuit Test
- Ignition OFF, disconnect the harness connector at the windshield wiper motor.
- Ignition ON, verify the scan tool BCM Wiper Park Switch parameter is Inactive.
- If not the specified value, test the signal circuit terminal E for a short to ground. If the circuit tests normal, replace the BCM.
- Install a 3-amp fused jumper wire between the signal circuit terminal E and ground. Verify the scan tool Wiper Park Switch parameter is Active.
- If not the specified value, test the signal circuit for an open/high resistance. If the circuit tests normal, replace the BCM.
- If all circuits test normal, replace the windshield wiper 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.