air conditioning and heater module assembly …...2006 cadillac cts : heating, ventilation, &...

2006 Cadillac CTS : Heating, Ventilation, & Air Conditioning > Repair Instructions > Air Conditioning And Heater

Module Assembly Removal And Installation

Air Conditioning And Heater Module Assembly Removal And Installation

AIR CONDITIONING AND HEATER MODULE ASSEMBLY REMOVAL AND INSTALLATION

Tools Required

◾ J 39400-A (Image 1) Halogen Leak Detector

◾ J 38185 (Image 2) Hose Clamp Pliers

◾ J 45689 (Image 3) A/C Quick Joint Tool

Removal Procedure

1. Recover the refrigerant. Refer to Refrigerant Recovery and

Recharging .

2. Remove the battery. Refer to Battery Replacement (Refer To List 1)

in Engine Electrical.

3. Drain the coolant. Refer to Cooling System Draining and Filling

(Refer To List 2) in Engine Cooling.

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4. Using theJ 38185 (Image 2) disconnect the heater inlet hose (1).

Listen

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5. Using the J 38185 (Image 2) disconnect the heater outlet hose (1) .

6. Disconnect both A/C lines at the cowl.

NOTE Important: The body of the tool should be parallel to the A/C line.

Listen



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7. Using the J 45689 (Image 3) (1) insert the probe end into the two

small openings of the plastic quick joint.

8. Remove both quick joint clamps.

9. Disconnect both A/C lines.

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10. Remove the IP Carrier. Refer to Instrument Panel Carrier

Replacement (Refer To List 3) in Instrument Panel, Gages, and

Console.

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11. Remove the air inlet assembly.

12. Disconnect the HVAC module electrical connector.

13. Disconnect the HVAC module drain tube (2) from the floor.

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14. Press the tab and release the left rear duct from the HVAC module.

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15. Disconnect the left rear heater duct from the HVAC module.

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16. Press the tab and release the right rear duct from the HVAC module.

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17. Disconnect the right rear heater ducts from the HVAC module.

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18. Remove the lower left HVAC module mounting nut (1).

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19. Remove the upper left HVAC module mounting nut (1).

20. Remove the HVAC module from the vehicle.

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21. Remove the foam from the A/C lines.

22. Remove the foam from around the heater pipes.

Installation Procedure

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1. Install the thick foam packing (1) on the heater core pipes.

2. Install the thin foam packing (2) on the heater core pipes.

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3. Install the thick foam packing (1) on the A/C lines.

4. Install the thin foam packing (2) on the A/C lines.

5. Install the HVAC module into the vehicle.

NOTE Notice: Refer to Fastener Notice (Refer To List 4) in the Preface section.

6. Install the upper left HVAC module mounting nut (1).

Tighten

Tighten the nut to 9 N·m (80 lb in).

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7. Install the lower left HVAC module mounting nut (1).

Tighten

Tighten the nut to 9 N·m (80 lb in).

8. Connect the rear heater ducts to the HVAC module.

9. Connect the drain tube to the bottom of the HVAC module.

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10. Connect the drain tube (2) to the floor.

11. Connect the HVAC electrical connector.

12. Install the air inlet assembly.

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13. Lubricate the O-rings of the A/C line with refrigerant oil before

connecting the A/C lines. Refer to O-Ring Replacement .

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14. Install the A/C line and A/C line quick connect line clamp (1) to the

evaporator .

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NOTE Important: Press the A/C line quick connect line clamp together until you hear it engage.

15. Engage the clamp.

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16. Install the A/C line and A/C line quick connect line clamp (1) to the

evaporator .

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NOTE Important: Press the A/C line quick connect line clamp together until you hear it engage.

17. Engage the clamp.

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18. Connect the heater inlet hose (1) using J 38185 (Image 2) .

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19. Connect the heater outlet hose (1) using J 38185 (Image 2) .

20. Install the IP carrier. Refer to Instrument Panel Carrier

Replacement (Refer To List 3) in Instrument Panel, Gages, and

Console.

21. Install the battery. Refer to Battery Replacement (Refer To List 1) in

Engine Electrical.

22. Fill the coolant. Refer to Cooling System Draining and Filling

(Refer To List 2) in Engine Cooling.

23. Evacuate and recharge the AC system. Refer to Refrigerant

Recovery and Recharging .

24. Leak test the fittings of the component using J 39400-A (Image 1) .

REFERED IMAGES LIST:

REFER TO LIST:

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(Image 1) J 39400-A

REFER TO LIST:

(Image 2) J 38185

REFER TO LIST:

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(Image 3) J 45689

List 1

◾ Engine / Engine Electrical / Repair Instructions / Battery

Replacement (RHD)

◾ Engine / Engine Electrical / Repair Instructions / Battery

Replacement (LHD)

List 2

◾ Engine / Engine Cooling / Repair Instructions / Cooling System

Draining And Filling (LY7)


Draining And Filling (Ls6)


Draining And Filling (LP1, LY7 Static Fill)


Draining And Filling (LS2 Static Fill)


Draining And Filling (Ge 47716)


Draining And Filling (LA3, LY9)

List 3

◾ Body / Instrument Panel, Gages, And Console / Repair

Instructions / Instrument Panel Carrier Replacement

◾ Body And Accessories / Instrument Panel, Gages, And Console /

Repair Instructions / Instrument Panel Carrier Replacement

◾ Body And Accessories / Keyless Entry / Repair Instructions /

Instrument Panel Carrier Replacement

List 4

◾ Preface / Cautions And Notices / Introduction / Fastener Notice

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◾ Unsorted / Fastener Notice

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