Exhaust Manifold Heat Shield Replacement - Left Side LY7

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 sensors (HO2S) electrical connector (2).



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

Notice: Refer to Fastener Notice in the Preface section.




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

Tighten
Tighten the bolts 22 N·m (16 lb ft).




3. Connect the engine harness electrical connector (1) to the HO2S (2).
4. Install the fuel injector sight shield. Refer to Fuel Injector Sight Shield Replacement.

Exhaust Manifold Heat Shield Replacement - Left 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 sensors (HO2S) electrical connector (2).



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

Notice: Refer to Fastener Notice in the Preface section.




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

Tighten
Tighten the bolts 22 N·m (16 lb ft).




3. Connect the engine harness electrical connector (1) to the HO2S (2).
4. Install the CPA retainer.
5. Install the intake manifold cover. Refer to Intake Manifold Cover Replacement .