Diagnostic Aids
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2003 GMC Savana Special, 2003 GMC Savana Camper Special, 2003 GMC Savana, 2003 Chevrolet RV Cutaway, and 2003 Chevrolet Cutaway. However, it is still accessible from the selected car via links, so may be relevant.
DTC B1000 be stored as a history DTC without affecting operation of SDM. If DTC B1000 is stored only as a history DTC and not as a current DTC, DO NOT replace SDM. If DTC B1000 is stored as both a current and history DTC, replace SDM.