Heater Pipes Replacement 3.8L

1. Partially drain the engine coolant.

Notice: Remove the heater hose quick connect fittings by hand. Do not attempt to pry the quick connect fittings from the drive belt tensioner. Prying the quick connect fittings may damage the quick connect fittings.




2. Disconnect the heater hose quick connect fittings from the drive belt tensioner.

Twist and pull the quick connect fittings from the drive belt tensioner.

3. Discard the O-rings.



4. Remove the bolt attaching the inlet and outlet hose bracket at the mid rail.




Notice: Do not apply excessive force on the heater core pipes during hose removal. Applying excessive force on the heater core pipes may damage the heater core pipes.

5. Remove the inlet and outlet hoses from the heater core.

5.1.	Squeeze the hose clamp with the pliers.

5.2.	Slide the clamp away from the heater core fittings.

5.3.	Gently twist and pull the heater hose from the heater core fitting.

6. Remove the inlet hose from the module retainer.
7. Remove the inlet and outlet hoses (4) from the vehicle.

1. Install the inlet and outlet hoses to the vehicle.
2. Install the inlet hose to the module retainer.



3. Install the inlet and outlet hoses to the heater core.

3.1.	Apply lubricant to the inside diameter of the heater hose, if necessary.

3.2.	Push the heater hose onto the fitting with a twisting motion.

3.3.	Squeeze the hose clamp ends together and slide the clamp over the end of the heater hose.

3.4.	Install the clamp beyond the bead around the fitting.

3.5.	Install the other heater hose.




4. Install the bolt attaching the inlet and outlet hose bracket at the mid rail.

Tighten
Tighten the heater hose bracket bolt to 14 N·m (10 lb ft).




5. Install the O-rings to the quick connect fittings.

Snap the quick connect fittings to the drive belt tensioner.

6. Pull back on the quick connect fittings in order to verify proper connector engagement.
7. Add the engine coolant.

•	If the previously drained coolant is uncontaminated, use the previously drained coolant.

•	If the previously drained coolant is contaminated, discard the contaminated coolant.

•	Then, add a fresh 50/50 DEX-COOL and water mixture.

Heater Pipes Replacement 5.7L

1. Partially drain the engine coolant.

Notice: Remove the heater hose quick connect fittings by hand. Do not attempt to pry the quick connect fittings from the drive belt tensioner. Prying the quick connect fittings may damage the quick connect fittings.




2. Disconnect the heater hose quick connect fittings from the drive belt tensioner.

Twist and pull the quick connect fittings from the drive belt tensioner.

3. Discard the O-rings.



4. Remove the bolt attaching the inlet and outlet hose bracket at the mid rail.




Notice: Do not apply excessive force on the heater core pipes during hose removal. Applying excessive force on the heater core pipes may damage the heater core pipes.

5. Remove the inlet and outlet hoses from the heater core.

5.1.	Squeeze the hose clamp with the pliers.

5.2.	Slide the clamp away from the heater core fittings.

5.3.	Gently twist and pull the heater hose from the heater core fitting.

6. Remove the inlet hose from the module retainer.
7. Remove the inlet and outlet hoses (4) from the vehicle.

1. Install the inlet and outlet hoses to the vehicle.
2. Install the inlet hose to the module retainer.



3. Install the inlet and outlet hoses to the heater core.

3.1.	Apply lubricant to the inside diameter of the heater hose, if necessary.

3.2.	Push the heater hose onto the fitting with a twisting motion.

3.3.	Squeeze the hose clamp ends together and slide the clamp over the end of the heater hose.

3.4.	Install the clamp beyond the bead around the fitting.

3.5.	Install the other heater hose.




4. Install the bolt attaching the inlet and outlet hose bracket at the mid rail.

Tighten
Tighten the heater hose bracket bolt to 14 N·m (10 lb ft).




5. Install the O-rings to the quick connect fittings.

Snap the quick connect fittings to the drive belt tensioner.

6. Pull back on the quick connect fittings in order to verify proper connector engagement.
7. Add the engine coolant.

•	If the previously drained coolant is uncontaminated, use the previously drained coolant.

•	If the previously drained coolant is contaminated, discard the contaminated coolant.

•	Then, add a fresh 50/50 DEX-COOL and water mixture.