GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 1999 🢒 Chevy P42 Commercial Chassis 🢒 Body and Accessories 🢒 Wiring Systems 🢒 Exhaust System Inspection
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Object Number: 168974 Size: SH
  • Inspect the exhaust pipes, seals, catalytic converters, the mufflers, and tailpipes for the following conditions:
    •    - Cracked joints
       - Broken welds
       - Corrosion damage which may cause leaks in the exhaust system
       • 
    Object Number: 168887 Size: SH
  • Inspect the clamps, the brackets, and the insulators for the following conditions:
    •    - Cracks
       - Broken Bolts
       - Stripped bolt threads
       - Corroded bolt threads
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  • The exhaust system (including the heat shield) must be free of the following conditions:
    •    - Leaks
       - Binding
       - Grounding
       - Excessive vibration
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  • These conditions may occur if any of the following components are loose or damaged:
    •    - Flange bolts
       - Seals
       - Heat shields
       - Brackets
       - Pipes