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Home >> Chevrolet >> 2006 >> Cobalt LTZ >> Repair and Diagnosis >> External Pages >> Different car >> Section 735 (Lighting Systems) >> Diagnostic Information and Procedures >> DTC B3903 >> Conditions for Setting the DTC >> B3903 05

B3903 05

WARNING: This page is about a different car, the 2008 Pontiac G5 and 2008 Chevrolet Cobalt. However, it is still accessible from the selected car via links, so may be relevant.

The DTC will set when the BCM detects a short to voltage or an open/high resistance in the stop lamp relay control circuit.

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