Important Preliminary Checks Before Starting
WARNING: This page is about a different car, the 2004 Buick Regal. However, it is still accessible from the selected car via links, so may be relevant.
Before using the Symptom tables use the following:
- Perform the Diagnostic System Check - Engine Controls
and verify all of the following items:
- Ensure no DTCs are stored.
- Scan tool data is within normal operating range. Refer to Scan Tool Data List .
- Verify the customer complaint.
- Perform the Visual/Physical Check in this section.
Locate the correct symptom in the list at the end of this section. Follow the procedures in the appropriate diagnostic table. If the condition can not be duplicated, or is determined to be intermittent refer to Intermittent Conditions .