Exhaust Manifold Heat Shield Replacement - Right Side LY7 or LCS

1. Remove the fuel injector sight shield. Refer to Fuel Injector Sight Shield Replacement.
2. Disconnect the engine wiring harness electrical connector (3) from the heated oxygen sensor (HO2S) electrical connector (4).
3. Remove the HO2S electrical connector retainer (5) from the retainer clip.



4. Remove the exhaust manifold heat shield bolts (1).
5. Remove the exhaust manifold heat shield (2).

Caution: Refer to Fastener Caution in the Preface section.




1. Install the exhaust manifold heat shield (2).
2. Install the exhaust manifold heat shield bolts (1) and tighten to 22 N·m (16 lb ft).



3. Connect the engine harness electrical connector (3) to the HO2S electrical connector (4).
4. Install the HO2S electrical connector retainer (5) to the retainer clip.
5. Install the fuel injector sight shield. Refer to Fuel Injector Sight Shield Replacement.

Exhaust Manifold Heat Shield Replacement - Right Side LZ4

1. Remove the intake manifold cover. Refer to Intake Manifold Cover Replacement.
2. Remove the connector position assurance (CPA) retainer.
3. Disconnect the engine wiring harness electrical connector (3) from the heated oxygen sensor (HO2S) electrical connector (2).
4. Remove the HO2S electrical connector rosebud clip from the engine wiring harness retainer strap (6).



5. Remove the exhaust manifold heat shield bolts (1).
6. Remove the exhaust manifold heat shield (2).

1. Install the exhaust manifold heat shield (2).

Caution: Refer to Fastener Caution in the Preface section.

2. Install the exhaust manifold heat shield bolts (1) and tighten to 22 N·m (16 lb ft).



3. Connect the engine harness electrical connector (3) to the HO2S electrical connector (2).
4. Install the CPA retainer.
5. Install the HO2S electrical connector rosebud clip to the engine wiring harness retaining strap (6).
6. Install the intake manifold cover. Refer to Intake Manifold Cover Replacement.