Buick Regal: Air Conditioning Evaporator Replacement

Removal Procedure

1. Air Conditioning Evaporator and Blower Case Replacement - Remove.

2.

Heater and Air Conditioning Evaporator and Blower Upper Case Bolt(1) - Remove[11x].

3. Heater and Air Conditioning Evaporator and Blower Upper Case(2) - Remove.

4. Unlock the retaining tabs.

5.

Air Conditioning Evaporator(1) - Remove.

Installation Procedure

1.

Air Conditioning Evaporator(1) - Install.

2.

CAUTION: Fastener Caution

Heater and Air Conditioning Evaporator and Blower Upper Case(2) - Install.

3. Heater and Air Conditioning Evaporator and Blower Upper Case Bolt(1) - Install and tighten[11x] 2.5N.m (22 lb in).

4. Air Conditioning Evaporator and Blower Case Replacement - Install.

AIR CONDITIONING EVAPORATOR AND BLOWER MODULE DRAIN HOSE REPLACEMENT

1. Air Conditioning Evaporator and Blower Module Drain Hose

Procedure

Pull the right front carpet back to access the air conditioning evaporator and blower module drain hose.

CAUTION: Refer to HVAC Module Drain Tube Caution.

HEATER INLET HOSE REPLACEMENT (3.6L LGX)

Removal Procedure

1. Drain the cooling system.

2. Air Cleaner Outlet Duct - Remove.

3.

Heater Inlet Hose Clamp(1) - Disengage.

4. Heater Inlet Hose(2)@Heater Inlet and Outlet Pipe - Remove.

5.

Heater Inlet Hose Clamp(1) - Disengage.

6. Heater Inlet Hose(2)@Heater Core - Remove.

7. Heater Inlet Hose(2) - Remove.

Installation Procedure

1.

Heater Inlet Hose(2)@Heater Core - Install.

2. Heater Inlet Hose Clamp(1) - Engage.

3.

Heater Inlet Hose(2)@Heater Inlet and Outlet Pipe - Install.

4. Heater Inlet Hose Clamp(1) - Engage.

5. Air Cleaner Outlet Duct - Install.

6. Fill the cooling system.

7. Start the engine and check for coolant leaks.

HEATER INLET HOSE REPLACEMENT (2.0L LTG)

Preliminary Procedure

NOTE: The charge air cooler outlet air tube is only removed for clarity in the graphic.

Cooling System Draining and Filling (Static) Cooling System Draining and Filling (GE 47716).

1. Heater Inlet Hose Clamp[2x]
2. Heater Inlet Hose Retainer
   Procedure
   Unlock the retaining tabs.
3. Heater Inlet Hose

HEATER OUTLET HOSE REPLACEMENT (3.6L LGX)

Preliminary Procedures

1. Cooling System Draining and Filling (Static) Cooling System Draining and Filling (GE 47716).

2. Air Cleaner Outlet Duct Replacement.

1. Heater Outlet Hose Clamp[3x]
   Procedure
   Hose Clamp Replacement Guidelines - Spring Type
2. Heater Outlet Hose Retainer
   Procedure
   Unlock the retaining tabs.
3. Heater Outlet Hose
   Preliminary Procedures
   1. Fill the cooling system to the proper level.
   2. Start the engine and check for coolant leaks.

HEATER OUTLET HOSE REPLACEMENT (2.0L LTG)

Preliminary Procedure

NOTE: The charge air cooler outlet air tube is only removed for clarity in the graphic.

Drain the cooling system.

1. Heater Outlet Hose Clamp[3x]
2. Heater Outlet Hose Retainer
   Procedure
   Unlock the retaining tabs.
3. Heater Outlet Hose
   Procedure
   1. Fill the cooling system.
   2. Check the cooling system for leaks.

HEATER COOLANT PUMP HOSE REPLACEMENT

Preliminary Procedure

Cooling System Draining and Filling (Static) Cooling System Draining and Filling (GE 47716).

1. Heater Coolant Pump Hose Clamp[2x]
2. Heater Coolant Pump Hose - Inlet

PASSENGER COMPARTMENT AIR FILTER REPLACEMENT

Preliminary Procedures

Instrument Panel Compartment Replacement.

1. Passenger Compartment Air Filter Housing Cover Screw[2x]
   CAUTION: Fastener Caution.
   Tighten 2.5N.m (22 lb in)
2. Passenger Compartment Air Filter Housing Cover
   Procedure
   Unlock the retaining tabs.
3. Passenger Compartment Air Filter

BLOWER MOTOR CONTROL MODULE REPLACEMENT

1. Blower Motor Control Module Bolt[2x]
   CAUTION: Fastener Caution.
   Tighten 2.5 N.m (22 lb in)
2. Blower Motor Control Module
   Procedure
   1. Disconnect the electrical connectors.
   2. Control Module References - Programming and Setup

BLOWER MOTOR REPLACEMENT

Preliminary Procedures

1. Battery Negative Cable Disconnection and Connection (3.6L LGX) Battery Negative Cable Disconnection and Connection (2.0L LTG).

2. Instrument Panel Lower Trim Panel Insulator Replacement.

1. Blower Motor Bolt[3x]
   CAUTION: Fastener Caution.
   Tighten 2.5 N.m (22 lb in)
2. Blower Motor
   Procedure
   Disconnect the electrical connector.

SIDE WINDOW DEFOGGER OUTLET GRILLE REPLACEMENT

1. Side Window Defogger Outlet Grille[2x]
   Procedure
   Unlock the retaining tabs.

INSTRUMENT PANEL OUTER AIR OUTLET REPLACEMENT - LEFT SIDE

Preliminary Procedure

Loosen the side of the steering column upper trim cover to aid in the removal of the instrument panel outer air outlet.

1. Instrument Panel Outer Air Outlet - Left Side
   Procedure
   1. Unlock the retaining tabs.
   2. Using a flat-bladed plastic trim tool, release the retainer clips.

INSTRUMENT PANEL CENTER AIR OUTLET REPLACEMENT - LEFT SIDE

Preliminary Procedure

Radio Control Assembly Replacement (IOB) Radio Control Assembly Replacement (IO5, IO6).

1. Instrument Panel Center Air Outlet - Left Side
   Procedure
   Unlock the retaining tabs.

INSTRUMENT PANEL CENTER AIR OUTLET REPLACEMENT - RIGHT SIDE

Preliminary Procedure

Radio Control Assembly Replacement (IOB) Radio Control Assembly Replacement (IO5, IO6).

1. Instrument Panel Center Air Outlet - Right Side
   Procedure
   Unlock the retaining tabs.

INSTRUMENT PANEL OUTER AIR OUTLET REPLACEMENT - RIGHT SIDE

1. Instrument Panel Outer Air Outlet - Right Side
   Procedure
   1. Unlock the retaining tabs.
   2. Use a flat bladed plastic trim tool.

INSTRUMENT PANEL COMPARTMENT AIR DUCT REPLACEMENT

Preliminary Procedure

Floor Rear Air Outlet Duct Adapter Replacement (Left Side)Floor Rear Air Outlet Duct Adapter Replacement (Right Side) - Left Side.

1. Instrument Panel Compartment Air Duct Bolt
   CAUTION: Refer to Fastener Caution.
   Tighten 1.5 N.m (13 lb in)
2. Instrument Panel Compartment Air Duct

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