GM Service Manual Online
For 1990-2009 cars only
  1. The exhaust system hangers minimize noise transfer. Vibration and noise can be transmitted into the vehicle under the following conditions:
  2. • System contact with the body
    • A restricted hanger

    Object Number: 41104  Size: SH
  3. Position the clamps and the insulator so that the hanger is vertical, when the exhaust system is at operating temperature.
  4. Inspect that the brackets are horizontal.
  5. Important: Allow the pipes to cool before touching them.

  6. Use heat in front of the rear suspension, in order to reposition the pipes if necessary.
  7. Do not use an acetylene torch near the fuel tank.

  8. Object Number: 43536  Size: SH
  9. Inspect that the support brackets are horizontal.
  10. Inspect that the clearance between the frame members and the floor pan is a minimum of 15 mm (5/8 in) after the following procedures:
  11. • Hanger adjustment
    • Pipe positioning
  12. Tighten all clamps according to the specified torques. Refer to Fastener Tightening Specifications .
  13. Clearance is needed in order to avoid the following conditions:
  14. • Overheating of the floor pan
    • Damage to the passenger compartment carpets
  15. Inspect that the weight of the system is evenly distributed according to the equal deflection at each hanger on the following components:
  16. • The brackets
    • The hangers
  17. Ensure that the exhaust system has the proper clearances. Refer to Exhaust System Clearances .