GM Service Manual Online
For 1990-2009 cars only

Exhaust Manifold Heat Shield Replacement - Right Side LNJ

Removal Procedure


    Object Number: 1087647  Size: SH
  1. Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle.
  2. Remove the heat shield bolts (3).
  3. Remove the lower heat shield (2) from the exhaust manifold.
  4. Remove the upper heat shield (1) from the exhaust manifold.

Installation Procedure


    Object Number: 1087647  Size: SH
  1. Install the upper heat shield (1) to the exhaust manifold.
  2. Install the lower heat shield (2) to the exhaust manifold.
  3. Caution: Refer to Fastener Caution in the Preface section.

  4. Install the heat shield bolts to the exhaust manifold. Tighten the bolts to 10 N·m (89 lb in).
  5. Lower the vehicle.

Exhaust Manifold Heat Shield Replacement - Right Side LY7

Removal Procedure

Warning: Refer to Exhaust Service Warning in the Preface section.

Warning: Refer to Protective Goggles and Glove Warning in the Preface section.


    Object Number: 1836230  Size: SH
  1. Remove the fuel injector sight shield, if necessary. Refer to Fuel Injector Sight Shield Replacement.
  2. Disconnect the engine wiring harness electrical connector (3) from the heated oxygen sensor (HO2S) electrical connector (2).
  3. Remove the HO2S electrical connector retainer from the camshaft cover.

  4. Object Number: 1836985  Size: SH
  5. Remove the exhaust manifold heat shield bolts.
  6. Remove the exhaust manifold heat shield, sliding the shield up over the HO2S pigtail.

Installation Procedure


    Object Number: 1562768  Size: SH
  1. Install the exhaust manifold heat shield, sliding the shield down over the HO2S pigtail.
  2. Caution: Refer to Fastener Caution in the Preface section.

  3. Install the exhaust manifold heat shield bolts and tighten to 10 N·m (89 lb in).

  4. Object Number: 1836230  Size: SH
  5. Connect the engine wiring harness electrical connector (3) to the HO2S electrical connector (2).
  6. Install the HO2S electrical connector retainer to the camshaft cover.
  7. Install the fuel injector sight shield, if necessary. Refer to Fuel Injector Sight Shield Replacement.