GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2009 🢒 Sierra - 2WD 🢒 Engine 🢒 Engine Exhaust 🢒 Floor Panel Heat Shield Replacement

Removal Procedure

    Object Number: 1856779 Size: SH
  1. Remove the catalytic converter. Refer to Catalytic Converter Replacement.
  2. If vehicle has a regular cab, remove the exhaust heat shield nuts.
  3. Remove the exhaust front heat shield (1) and/or the rear exhaust heat shield (2) from the studs.

    4. Object Number: 1856781 Size: SH
  4. If vehicle has extended cab, remove the exhaust heat shield nuts.
  5. Remove the exhaust front heat shield (1) and/or the rear exhaust heat shield (2) from the studs.

    6. Object Number: 1856782 Size: SH
  6. If vehicle has a crew cab, remove the exhaust heat shield nuts.
  7. Remove the exhaust front heat shield (1) and/or the rear exhaust heat shield (2) from the studs.

Installation Procedure

    Object Number: 1856782 Size: SH
  1. If vehicle has a crew cab, position and install the rear exhaust heat shield (2) and/or the front exhaust heat shield (1) to the underbody studs.

    2. Caution: Refer to Fastener Caution in the Preface section.

  2. Install the exhaust heat shield nuts and tighten to 9 N·m (80 lb in).

    3. Object Number: 1856781 Size: SH
  3. If vehicle has a extended cab, position and install the rear exhaust heat shield (2) and/or the front exhaust heat shield (1) to the underbody studs.
  4. Install the exhaust heat shield nuts and tighten to 9 N·m (80 lb in).

    5. Object Number: 1856779 Size: SH
  5. If vehicle has a regular cab, position and install the rear exhaust heat shield (2) and/or the front exhaust heat shield (1) to the studs.
  6. Install the exhaust heat shield nuts and tighten to 9 N·m (80 lb in).
  7. Install the catalytic converter. Refer to Catalytic Converter Replacement.