Diagnostic Aids

WARNING: This page is about a different car, the 2002 Chevrolet Malibu. However, it is still accessible from the selected car via links, so may be relevant.

Check both the LH and RH headlamps for proper operation.
Check both the LH and RH HDLP fuses.
Diagnose all other DRL DTCs before DTC B2600.
If the DTC is a history DTC, the problem may be intermittent. Refer to TESTING FOR INTERMITTENT AND POOR CONNECTIONS in Wiring Systems.