@dragon883 this is an old question but somehow popped back up. Answering it just for completion sake since it may no longer be an issue by the OP but may help someone else looking for the same answers.
"HEATER CORE REPLACEMENT
Removal Procedure
1. Remove the HVAC module assembly. Refer to HVAC Module Assembly Replacement .
2. Remove the screws from the heater core cover.
[image|1159210]
3. Remove the heater core cover (1) from the HVAC module assembly (2).
[image|1159209]
4. Remove the heater core cowl gasket (1) from the heater core (2).
[image|1159211]
5. Remove the heater core (1) from the HVAC module assembly (2).
HVAC Module Assembly Replacement
Tools Required
J 43181 Quick Connect Connector Removal Tool
Removal Procedure
1. Drain the engine coolant. Refer to Draining and Filling Cooling System in Engine Cooling.
[image|1159212]
2. Using the J 43181 disconnect the inlet heater hose from the heater core.
1. Install the J 43181 to the heater core pipe.
2. Close the tool around the heater core pipe.
3. Firmly pull the tool into the quick connect end of the heater hose.
4. Firmly grasp the heater hose. Pull the heater hose forward in order to disengage the inlet hose from
the heater core.
3. Using the J 43181 disconnect the surge tank outlet hose from the heater core.
1. Install the J 43181 to the heater core pipe.
2. Close the tool around the heater core pipe.
3. Firmly pull the tool into the quick connect end of the heater hose.
4. Firmly grasp the heater hose. Pull the heater hose forward in order to disengage the surge tank
outlet hose from the heater core.
4. Remove the accumulator. Refer to Accumulator Replacement .
5. Remove the instrument panel carrier. Refer to Instrument Panel (I/P) Carrier Replacement in
Instrument Panel, Gauges and Console.
6. Remove the HVAC module drain hose.
7. Disconnect the electrical harnesses and the ground connections from the HVAC module assembly.
[image|1159213]
8. Remove the nuts (4) from the HVAC module assembly (2).
9. Remove the bolts (3) from the HVAC module assembly (2).
10. Remove the HVAC module assembly (2) from the vehicle (1).