GM Service Manual Online
For 1990-2009 cars only

Step

Action

Yes

No

1

Did you perform the Diagnostic System Check for the BCM?

Go to Step 2

Go to Diagnostic System Check - Body Control System in Body Control Systems

2

Did you retrieve DTC 2?

Go to DTC 002

Go to Step 3

3

Did you retrieve DTC 3?

Go to DTC 003

Go to Symptoms - Lighting Systems