Diagnostic Aids: C0265
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2003 GMC Yukon XL, 2003 GMC Yukon, 2003 Chevrolet Tahoe, 2003 Chevrolet Suburban, and 2003 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
Thoroughly inspect connections and circuitry that may cause an intermittent malfunction. Refer to TESTING WIRING SYSTEMS FOR INTERMITTENT & POOR CONNECTIONSCONNECTOR REPAIRS and to WIRING REPAIRS in Wiring Systems.