Engine Controls - Trouble Shooting - No Codes - 3.4L: Symptoms: Notes

NOTE: Manufacturer does not provide testing procedures for many individual systems and components. For symptom testing not listed, perform related DTC testing procedure. See SELF-DIAGNOSTICS - 3.4L ALERO, GRAND AM, IMPALA & MONTE CARLO article.

Before proceeding with any symptom diagnosis, perform all steps under PRELIMINARY INSPECTION .