GM Service Manual Online
For 1990-2009 cars only

Inspection Procedure

    • Inspect the following areas:
       - Exhaust pipes
       - Seals
       - Three-way catalytic converters
       - Tailpipes
    • Inspect the exhaust system for the following conditions:
       - Broken welds
       - Corrosion that would cause a leak
       - Cracked joints
    • Inspect the exhaust system for cracks. Inspect the connections for stripped bolt heads. Inspect the fasteners for rusted bolt threads.
    • The exhaust system, including the heat shields, must be free of the following conditions:
       - Leaks
       - Binding
       - Grounding
       - Excessive vibration
    • If any of these conditions exist, check the exhaust system component alignment. Align as necessary. Replace as necessary.