Exhaust Crossover Pipe Replacement RPO LX9

1. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection .
2. Remove the throttle body air inlet duct. Refer to Air Cleaner Inlet Duct Replacement .
3. Drain the cooling system. Refer to Cooling System Draining and Filling .
4. Remove the radiator inlet hose from the engine. Refer to Radiator Inlet Hose Replacement .
5. Remove the thermostat bypass pipe. Refer to Thermostat Bypass Pipes Replacement .



6. Remove the exhaust crossover heat shield bolts.
7. Remove the exhaust crossover heat shield.



8. Remove the exhaust crossover pipe studs/nuts.
9. Remove the exhaust crossover pipe.

1. Install the exhaust crossover pipe.

Notice: Refer to Fastener Notice in the Preface section.

2. Install the exhaust crossover pipe studs/nuts.

Tighten
Tighten the studs/nuts to 25 N·m (18 lb ft).




3. Install the exhaust crossover heat shield.
4. Install the exhaust crossover heat shield bolts.

Tighten
Tighten the bolts to 10 N·m (89 lb in).

5. Install the thermostat bypass pipe. Refer to Thermostat Bypass Pipes Replacement .
6. Install the radiator inlet hose to the engine. Refer to Radiator Inlet Hose Replacement .
7. Fill the cooling system. Refer to Cooling System Draining and Filling .
8. Install the throttle body air inlet duct. Refer to Air Cleaner Inlet Duct Replacement .
9. Connect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection .

Exhaust Crossover Pipe Replacement RPO LZ9

1. Remove the air cleaner outlet duct. Refer to Air Cleaner Outlet Duct Replacement .
2. Disconnect the heater hoses from the heater pipes.
3. Remove the nuts holding the heater pipes onto the throttle body.
4. Position the heater pipes out of the way.
5. Remove the exhaust crossover heat shield bolts (1).
6. Remove the exhaust crossover heat shield (2).



7. Remove the exhaust crossover pipe nuts (1).
8. Remove the exhaust crossover pipe (2).
9. Remove the exhaust crossover pipe seals.

1. Install the exhaust crossover pipe seals to the exhaust manifolds.
2. Install the exhaust crossover pipe (2).

Notice: Refer to Fastener Notice in the Preface section.

3. Install the exhaust crossover pipe nuts (1).

Tighten
Tighten the nuts to 20 N·m (15 lb ft).




4. Install the exhaust crossover heat shield (2).
5. Install the exhaust crossover heat shield bolts (1).

Tighten
Tighten the bolts to 10 N·m (89 lb in).

6. Position the heater pipes back to the original position.
7. Install the nuts holding the heater pipes on the throttle body.
8. Connect the heater hoses onto the heater pipes.
9. Install the air cleaner outlet duct. Refer to Air Cleaner Outlet Duct Replacement .