Removal Procedure
Courtesy of GENERAL MOTORS CORP.
- Disconnect the breather tube at the air cleaner outlet duct.
Courtesy of GENERAL MOTORS CORP.
- Remove the air cleaner outlet duct retaining wingnut.
Courtesy of GENERAL MOTORS CORP.
- Disconnect the IAT sensor harness connector.
Courtesy of GENERAL MOTORS CORP.
- Remove the air cleaner outlet duct from the throttle body.
- Remove the intermediate steering shaft. Refer to Intermediate Steering Shaft Replacement - Lower
in Steering Wheel and Column.
Courtesy of GENERAL MOTORS CORP.
- Disconnect the engine coolant temperature (ECT) sensor electrical connector.
Courtesy of GENERAL MOTORS CORP.
- Remove the radiator inlet hose support bracket and nut.
- Raise the vehicle. Refer to Lifting and Jacking the Vehicle
in General Information.
- Disconnect the exhaust pipe from the exhaust manifold. Refer to Exhaust Manifold Pipe Replacement .
- Lower vehicle.
- Remove the front tire to gain access to the rear exhaust manifold bolts. Refer to Tire and Wheel Removal and Installation
in Tires and Wheels.
Courtesy of GENERAL MOTORS CORP.
- Remove the fender wheelhouse extension.
- Working through the wheel house opening disconnect the spark plug wires from the spark plugs.
- Rotate the spark plug wire boot one half turn.
- Pull outward on the spark plug wire boot to release from the spark plug.
Courtesy of GENERAL MOTORS CORP.
- Remove the exhaust manifold bolts and the stud.
- Lower the vehicle.
- From under the hood remove the exhaust manifold and the spark plug wire shields from the engine.
Courtesy of GENERAL MOTORS CORP.
- Remove and discard the exhaust manifold gaskets.
- Clean all gasket surfaces. Refer to Exhaust Manifold Cleaning and Inspection
in Engine Mechanical - 4.3L Unit Repair.