Test Description
WARNING: This page is about a different car, the 2003 Buick Regal and 2003 Buick Century. However, it is still accessible from the selected car via links, so may be relevant.
The number(s) below refer to the step number(s) on the diagnostic table.
- 4. This test verifies the integrity of the key resistor circuits between the ignition switch and the BCM.
Courtesy of GENERAL MOTORS CORP.