My 2007 Chevrolet Silverado 1500 is coding service four wheel drive, scanned it and got code CO 379, Front axle open circuit symptom 04
40

Asked by Vandyratliff Jun 15, 2017 at 05:53 PM about the 2007 Chevrolet Silverado 1500 2LT Extended Cab RWD

Question type: Maintenance & Repair

Service four wheel drive comes on when I start truck, I can turn truck off and
clears the warning. I scanned it today and got code CO379, Front Axle open
circuit ( symptom 04)

1 Answer
4,205

Capn_Steve answered 7 years ago

Either the actuator on the front axle is bad. Or there is a broken wire or a loose connector. I dont see too many bad switches. I suspect a broken wire down near the front of the axle near the bracket that holds the connector. The switch is a large black or white cylinder that is on the passenger side axle tube near the differential housing.

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