Diagnostic Aids
WARNING: This page is about a different car, the 2004 Pontiac Grand Prix. However, it is still accessible from the selected car via links, so may be relevant.
A security system sensor supply circuit that is shorted to battery positive could cause an open in the theft deterrent exciter module which will cause DTC B3055. If you were sent to this diagnostics from DTC B3055 table ensure you complete DTC B3055 diagnostics after DTC B2945 condition has been corrected.