GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 1996 🢒 Astro - 4WD 🢒 Engine 🢒 Engine Exhaust 🢒 Muffler

Removal Procedure
  1. Raise the vehicle.
  2. Support the muffler assembly.

    3. Object Number: 84636 Size: SH
  3. Remove the three nuts connecting the muffler to the catalytic converter.

    4. Object Number: 72539 Size: SH
  4. Remove the muffler from the three hangers.
  5. To aid in the removal of the muffler assembly, lubricate the rubber hangers with rubber lubricant GM P/N 12345884.
  6. Remove the muffler from the vehicle.

Installation Procedure

    Object Number: 72539 Size: SH
  1. Install the muffler into the vehicle.

    2. Connect the muffler to the three hangers.


    Object Number: 84636 Size: SH
  2. Install the three nuts to connect the muffler to the catalytic converter.

    3. Tighten
    Tighten the nuts to 40 N·m (30 lb ft),

    Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.