Diagnostic Trouble Code (DTC) List
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.
Important: Before you use this table, diagnose P0601, P0602, P0604, and P0606. Refer to DIAGNOSTIC SYSTEM CHECK - THEFT DETERRENT .