Throttle Body Heater Inlet Hose/Pipe Replacement LA3, LY9

1. Partially drain the cooling system. Refer to Cooling System Draining and Filling .



2. Disconnect the following from the remote power steering fluid reservoir (1):

•	The brake booster hose

•	The wiring harness (2)




3. Remove the remote power steering fluid reservoir mounting bolts (1, 3) ONLY, and position aside.
4. Remove the wiper motor module in order to gain access to the rear of the throttle body heater inlet hose. Refer to Windshield Wiper System Module Replacement in Wipers/Washer Systems.



5. Disconnect the heated oxygen sensor connector (2) from the rear of the throttle body heater inlet hose/pipe (3).
6. Disconnect the throttle body heater inlet hose from the water crossover, using 90° needlenose pliers.



7. Disconnect the electrical connector (2) from the coil pack (1).



8. Disconnect the following from the front of the throttle body heater inlet hose/pipe:

•	The camshaft position (CMP) sensor connector

•	The left knock sensor connector

•	The vacuum pipe retainer

9. Disconnect the vacuum brake booster hose (3) from the vacuum source.
10. Remove the bolts securing the throttle body heater inlet hose/pipe to the following:

•	The intake plenum (2)

•	The engine rear lift bracket

11. Disconnect the throttle body heater inlet hose from the throttle body.



12. Remove the throttle body heater inlet hose/pipe from the engine.

1. Position the throttle body heater inlet hose/pipe to the engine.
2. Connect the throttle body heater inlet hose to the throttle body.

Notice: Refer to Fastener Notice in the Preface section.




3. Install the bolts securing the throttle body heater inlet hose/pipe to the following:

•	The intake plenum (2)

•	The engine rear lift bracket

Tighten
Tighten the throttle body heater inlet hose/pipe bolts to 9 N·m (80 lb in).

4. Connect the vacuum brake booster hose (3) to the vacuum source.
5. Connect the following to the front of the throttle body heater inlet hose/pipe:

•	The CMP sensor connector

•	The left knock sensor connector

•	The vacuum pipe retainer




6. Connect the electrical connector (2) to the coil pack (1).
7. Connect the throttle body heater inlet hose to the water crossover, using 90° needlenose pliers.



8. Connect the heated oxygen sensor connector (2) to the rear of the throttle body heater inlet hose/pipe (3).
9. Install the wiper motor module. Refer to Windshield Wiper System Module Replacement in Wipers/Washer Systems.



10. Install the remote power steering fluid reservoir mounting bolts (1, 3).

Tighten

•	Tighten the remote power steering fluid reservoir to intake plenum mounting bolts to 9 N·m (80 lb in).

•	Tighten the remote power steering fluid reservoir to cylinder head mounting bolt to 25 N·m (18 lb ft).




11. Connect the following to the remote power steering fluid reservoir (1):

•	The brake booster hose

•	The wiring harness (2)

12. Fill the cooling system. Refer to Cooling System Draining and Filling .

Throttle Body Heater Inlet Hose/Pipe Replacement LS6

1. Partially drain the cooling system. Refer to Cooling System Draining and Filling .



2. Compress the clamp and remove the surge tank inlet hose from the surge tank.
3. Remove the radiator shelf cover.
4. Compress the clamp and remove the surge tank inlet hose from the radiator.
5. Remove the surge tank inlet hose from the retaining features on the fan shroud and the air cleaner assembly.
6. Compress the clamp and remove the surge tank inlet hose from the throttle body.
7. Remove the surge tank inlet hose from the vehicle.

1. Connect the surge tank inlet hose and clamp to the throttle body.
2. Insert the surge tank inlet hose into the retaining features on the fan shroud and the air cleaner housing assembly.
3. Connect the surge tank inlet hose and clamp to the radiator.
4. Install the radiator shelf cover.
5. Connect the surge tank inlet hose and clamp to the surge tank.
6. Fill the cooling system. Refer to Cooling System Draining and Filling .