Diagnostic Starting Point - Engine Exhaust
WARNING: This page is about a different car, the 2003 Pontiac Grand Am, 2003 Oldsmobile Alero, 2003 Chevrolet Monte Carlo, and 2003 Chevrolet Impala. However, it is still accessible from the selected car via links, so may be relevant.
Begin the system diagnosis by reviewing the system description under EXHAUST SYSTEM in THEORY & OPERATION - 3.4L ALERO, GRAND AM, IMPALA & MONTE CARLO article. Reviewing the information will help determine the correct symptom diagnostic procedure when a malfunction exists. It will also help you determine if the condition described by the customer is normal operation. Perform SYMPTOM DIAGNOSIS - ENGINE EXHAUST to identify the correct procedure for diagnosing the system.