Heater Outlet Pipe Replacement RPO LY7

1. Partially drain the cooling system. Refer to Cooling System Draining and Filling.
2. Remove the heater pipe outlet hose (1) from the heater outlet pipe.
3. Remove the heater inlet pipe. Refer to Heater Inlet Pipe Replacement.



4. Remove the heater outlet pipe (1).
5. Remove the heater outlet pipe O-ring (2). Discard O-ring.

1. Install a NEW heater inlet pipe O-ring.
2. Install the heater outlet pipe (1).



3. Install the heater outlet hose (1) to the heater outlet pipe.
4. Install the heater inlet pipe. Refer to Heater Inlet Pipe Replacement.

Heater Outlet Pipe Replacement RPO LNJ

1. Remove the injector sight shield. Refer to Fuel Injector Sight Shield Replacement.
2. Drain the cooling system. Refer to Cooling System Draining and Filling.
3. Remove the air cleaner air intake duct. Refer to Air Cleaner Inlet Duct Replacement.



4. Remove the manifold absolute pressure (MAP) sensor bolt (3) and bracket (2).
5. Rotate the MAP sensor out of the way of the heater outlet pipe.
6. Disconnect the evaporative emissions (EVAP) pipe from the EVAP canister purge solenoid. Refer to Plastic Collar Quick Connect Fitting Service.
7. Disconnect the electrical connector from the EVAP canister purge solenoid.
8. Disconnect the exhaust gas recirculation (EGR) valve electrical connector.



9. Release and slide the heater outlet hose clamp (1) away from the heater outlet pipe connection.
10. Disconnect the heater outlet hose (2) from the heater outlet pipe.



11. Release and slide the heater core outlet hose clamp away from the heater outlet pipe connection.
12. Disconnect the heater core outlet hose from the heater outlet pipe.



13. Remove the wire harness retaining clip (1) from the heater pipe bracket.
14. Remove the fuel pipe retaining clip (2) from the heater pipe bracket.



15. Remove the heater outlet pipe nut (1) securing the heater outlet pipe (2) to the intake manifold.
16. Remove the two nuts (3) and bolt (4) securing the heater outlet pipe to the throttle body.
17. Remove the heater outlet pipe (2) from the engine.

1. Install the heater outlet pipe (2) to the engine.

Caution: Refer to Fastener Caution in the Preface section.

2. Install the heater outlet pipe nut (1) securing the heater outlet pipe (2) to the intake manifold.

Tighten the nut to 25 N·m (18 lb ft).

3. Install the heater outlet pipe to the throttle body nuts (3) and bolt (4) and tighten to 10 N·m (89 lb in).



4. Install the fuel pipe retaining clip (2) to the heater pipe bracket.
5. Install the wire harness retaining clip (1) to the heater pipe bracket.



6. Connect the heater core outlet hose to the heater outlet pipe.
7. Position the heater core outlet hose clamp over the heater outlet pipe connection.



8. Connect the heater outlet hose (2) to the heater outlet pipe.
9. Position the heater outlet hose clamp (1) over the heater outlet pipe connection.
10. Connect the electrical connector to the EGR valve.
11. Connect the electrical connector to the EVAP canister purge solenoid.
12. Connect the EVAP pipe to the EVAP canister purge solenoid. Refer to Plastic Collar Quick Connect Fitting Service.



13. Reposition the MAP sensor.
14. Install the MAP sensor bracket (2) and bolt (3) and tighten to 10 N·m (89 lb in).
15. Install the air cleaner air intake duct. Refer to Air Cleaner Inlet Duct Replacement.
16. Fill the cooling system. Refer to Cooling System Draining and Filling.
17. Install the injector sight shield. Refer to Fuel Injector Sight Shield Replacement.