HVAC Systems - Automatic: Removal & Installation Hummer H2 I

Removal Procedure

1. Remove the center I/P trim bezel. Refer to «Trim Panel Replacement - Instrument Panel (I/P) Center»(ref-187217-S32969193842005083100000) in Instrument Panel, Gauges and Console.
2. Remove the screws from the HVAC control module (2).
3. Depress the HVAC control module tabs (3) and remove the HVAC control module (2) from the I/P (4).
4. Reposition the HVAC control module (2) from the I/P panel (1).
5. Disconnect the electrical connectors from the HVAC control module (2).

Installation Procedure

1. Connect the electrical connectors to the HVAC control module (2).
2. Install the HVAC control module (2) to the I/P (1).
3. Install the screws to the HVAC control module (2). Tighten: Tighten the screws to 1.9 N.m (17 lb in).
4. Install the center I/P trim bezel. Refer to «Trim Panel Replacement - Instrument Panel (I/P) Center»(ref-187217-S32969193842005083100000) in Instrument Panel, Gauges and Console.
5. Start the vehicle and let run for one minute.

1. Remove the I/P insulator panel. Refer to «Insulator Replacement - Instrument Panel (I/P)»(ref-187217-S22609352492005083100000) .
2. Disconnect the electrical connector (2) from the blower motor (1).
3. Disconnect the electrical connector (4) from the blower motor control processor (3).
4. Remove the screws from the blower motor control processor (3).
5. Remove the blower motor control processor (3) from the HVAC module assembly.

1. Install the blower motor control processor (3) to the HVAC module assembly.
2. Install the screws to the blower motor control processor (3). Tighten: Tighten the screws to 1.6 N.m (14 lb in).
3. Connect the electrical connector (4) to the blower motor control processor (3).
4. Connect the electrical connector (2) to the blower motor (1).
5. Install the I/P insulator panel. Refer to «Insulator Replacement - Instrument Panel (I/P)»(ref-187217-S22609352492005083100000) .

1. Remove the HVAC module assembly. Refer to «HVAC Module Assembly Replacement»(ref-187267-S10652867022005083100000) .
2. Disconnect the electrical connector from the recirculation actuator.
3. Remove the screws from the recirculation actuator (1).
4. Remove the recirculation actuator (1) from the HVAC module assembly (2).

1. Install the recirculation actuator (1) to the HVAC module assembly (2).
2. Install the screws to the recirculation actuator (1). Tighten: Tighten the screws to 2 N.m (18 lb in).
3. Connect the electrical connector to the recirculation actuator.
4. Install the HVAC module assembly. Refer to «HVAC Module Assembly Replacement»(ref-187267-S10652867022005083100000) .
5. Reprogram the recirculation actuator. Refer to «Re-Calibrating Actuators»(ref-187235-S04344226052005083100000) .

1. Remove the push pin (5) from the HVAC module assembly (1).
2. Remove the left floor duct (3) from the HVAC module assembly (1).
3. Disconnect the electrical connector (3) from the mode actuator (4).
4. Remove the screws from the mode actuator (4).
5. Remove the mode actuator (4) from the HVAC module assembly (1).
6. Remove the cam (2) from the HVAC module assembly (1).

1. Install the cam (2) to the HVAC module assembly (1).
2. Install the mode actuator (4) to the HVAC module assembly (1).
3. Install the screws to the mode actuator (4). Tighten: Tighten the screws to 2 N.m (18 lb in).
4. Connect the electrical connector (3) to the mode actuator (4).
5. Install the left floor air outlet duct (3) to the HVAC module assembly (1).
6. Install the push pin (5) to the HVAC module assembly (1).
7. Reprogram the Right air temperature actuator. Refer to «Re-Calibrating Actuators»(ref-187235-S04344226052005083100000) .

1. Remove the I/P carrier. Refer to «Instrument Panel (I/P) Carrier Replacement»(ref-187217-S30750948582005083100000) in Instrument Panel, Gauges and Console.
2. Disconnect the electrical connector (4) from the right air temperature actuator (3).
3. Remove the screws from the right air temperature actuator (3).
4. Remove the right air temperature actuator (3) from the HVAC module assembly (2).

1. Install the right air temperature actuator (3) to the HVAC module assembly (2).
2. Install the screws to the right air temperature actuator (3). Tighten: Tighten the screws to 2 N.m (18 lb in).
3. Connect the electrical connector to the right air temperature actuator.
4. Install the I/P carrier. Refer to «Instrument Panel (I/P) Carrier Replacement»(ref-187217-S30750948582005083100000) in Instrument Panel, Gauges, and Console.
5. Reprogram the air temperature actuator. Refer to «Re-Calibrating Actuators»(ref-187235-S04344226052005083100000) .

1. Remove the I/P insulator panel. Refer to «Insulator Replacement - Instrument Panel (I/P)»(ref-187217-S22609352492005083100000) in Instrument Panel, Gauges and Console.
2. Disconnect the electrical connector (1) from the left air temperature actuator (2).
3. Remove the screws from the left air temperature actuator (2).
4. Remove the left air temperature actuator (2) from the HVAC module assembly (3).

1. Install the left air temperature actuator (2) to the HVAC module assembly (3).
2. Install the screws to the left air temperature actuator (2). Tighten: Tighten the screws to 2 N.m (18 lb ft).
3. Install the electrical connector (1) to the left air temperature actuator (2).
4. Install the I/P insulator panel. Refer to «Insulator Replacement - Instrument Panel (I/P)»(ref-187217-S22609352492005083100000) in Instrument Panel, Gauges, and Console.
5. Reprogram the air temperature actuator. Refer to «Re-Calibrating Actuators»(ref-187235-S04344226052005083100000) .

1. Open the I/P compartment door.
2. Lower the I/P compartment door.
3. Disconnect the electrical connector (1) from the upper right air temperature sensor (2).
4. Remove the upper right air temperature sensor (1) from the air distributor duct (3).

1. Install the upper right air temperature sensor (1) to the air distributor duct (3).
2. Connect the electrical connector (1) to the upper right air temperature sensor (2).
3. Close the I/P compartment door.

1. Remove the center trim bezel. Refer to «Trim Panel Replacement - Instrument Panel (I/P) Center»(ref-187217-S32969193842005083100000) in Instrument Panel, Gauges, and Console.
2. Remove the upper left air temperature sensor (2) from the air distributor duct (1).
3. Disconnect the electrical connector (3) from the upper left air temperature sensor (2).

1. Install the upper left air temperature sensor (2) to the air distributor duct (1).
2. Connect the electrical connector (3) to the upper left air temperature sensor (2).
3. Install the center trim bezel. Refer to «Trim Panel Replacement - Instrument Panel (I/P) Center»(ref-187217-S32969193842005083100000) in Instrument Panel, Gauges, and Console.

1. Disconnect the electrical connector from the lower left air temperature sensor (1).
2. Remove the lower left air temperature sensor (1) from the HVAC module (2).

1. Install the lower left air temperature sensor (1) to the HVAC module (2).
2. Connect the electrical connector to the lower left air temperature sensor (1).

1. Remove the right I/P insulator panel. Refer to «Insulator Replacement - Instrument Panel (I/P)»(ref-187217-S22609352492005083100000) in Instrument Panel, Gauges and Console.
2. Disconnect the electrical connector from the lower right air temperature sensor (1).
3. Remove the lower right air temperature sensor (1).

1. Install the lower right air temperature sensor (1).
2. Connect the electrical connector to the lower right air temperature sensor (1).
3. Install the right I/P insulator panel. Refer to «Insulator Replacement - Instrument Panel (I/P)»(ref-187217-S22609352492005083100000) in Instrument Panel, Gauges and Console.

1. Disconnect the electrical connector (2) from the ambient air temperature sensor (3).
2. Remove the ambient air temperature sensor (3) from the vehicle (4).

1. Install the ambient air temperature sensor (3) to the vehicle (4).
2. Connect the electrical connector (2) to the ambient air temperature sensor (3).

1. Remove the left windshield garnish molding. Refer to «Garnish Molding Replacement - Windshield Pillar»(ref-187215-S17714370252005083100000) in Interior Trim.
2. Remove the left sunshade. Refer to «Sunshade Replacement»(ref-187215-S36908867292005083100000) in Interior Trim.
3. Gently pull down the headliner.
4. Remove the inside air temperature sensor from the headliner.
5. Disconnect the electrical connector from the inside air temperature sensor.
6. Remove the inside air temperature sensor from the headliner.

1. Install the inside air temperature sensor to the headliner.
2. Connect the electrical connector to the inside air temperature sensor.
3. Install the left sunshade. Refer to «Sunshade Replacement»(ref-187215-S36908867292005083100000) in Interior Trim.
4. Install the left windshield garnish molding. Refer to «Garnish Molding Replacement - Windshield Pillar»(ref-187215-S17714370252005083100000) in Interior Trim.

1. Remove the I/P upper trim pad. Refer to «Trim Pad Replacement - Instrument Panel (I/P) Upper»(ref-187217-S16609271192005083100000) in Trim Pad Replacement-I/P Upper.
2. Remove the sun load sensor from the I/P upper trim pad by turning counter clockwise.
3. Disconnect the electrical connector from the sun load sensor.

1. Connect the electrical connector to the sun load sensor.
2. Install the sun load sensor to the I/P upper trim pad by turning clockwise.
3. Install the I/P upper trim pad. Refer to «Trim Pad Replacement - Instrument Panel (I/P) Upper»(ref-187217-S16609271192005083100000) .