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Home >> GMC >> 2006 >> Sierra 1500 HD, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1005 (Mirror Systems) >> Diagnostic Information and Procedures >> DTC B1640 >> Conditions for Setting the DTC >> B1640 01

B1640 01

WARNING: This page is about a different car, the 2008 GMC Sierra, 2008 GMC Cab & Chassis Sierra, 2008 Chevrolet Silverado, and 2008 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

A short to voltage is detected on the mirror heating element supply voltage circuit while the heated mirrors.

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