HVAC Systems - Automatic: Removal & Installation Chevrolet Silverado 1500 HD

Installation Procedure

Scheme 87

1. Connect the electrical connectors to the HVAC control module.
2. Install the HVAC control module into the instrument panel, ensuring that the HVAC control module retaining tabs lock into place. NOTE: Refer to «FASTENER NOTICE»(ref-175132-S17785009232005041500000) .
3. Install the screws from the HVAC control module. Tighten Tighten the screws to 1.9 N.m (17 lb in).
4. Install the instrument panel accessory trim plate. Refer to «BEZEL REPLACEMENT -- INSTRUMENT PANEL (I/P) CLUSTER»(ref-189012-S39787970842005091100000) . IMPORTANT: Do not adjust any controls on the HVAC control module while the HVAC control module is calibrating. If interrupted improper HVAC performance will result.
5. Start the vehicle and let run for one minute.

Scheme 88

Scheme 89

1. If equipped, remove the sound insulator panel. Refer to «INSULATOR REPLACEMENT -- INSTRUMENT PANEL (I/P)»(ref-189012-S22565254502005091100000) .
2. Disconnect the electrical connector at the blower motor.
3. Disconnect the electrical connector (4) from the blower motor control processor (2).
4. Remove the blower motor control processor retaining screws (3) from the HVAC module (1).
5. Remove the blower motor control processor (2) from the HVAC module (1).

Scheme 90

Scheme 91

1. Install the blower motor control processor (2) to the HVAC module (1). NOTE: Refer to «FASTENER NOTICE»(ref-175132-S17785009232005041500000) .
2. Install the blower motor control processor retaining screws. Tighten Tighten the screws to 1.6 N.m (14 lb in).
3. Connect the electrical connector (4) to the blower motor control processor (2).
4. Connect the electrical connector at the blower motor.
5. If equipped, install the sound insulator panel. Refer to «INSULATOR REPLACEMENT -- INSTRUMENT PANEL (I/P)»(ref-189012-S22565254502005091100000) .

Scheme 92

Scheme 93

1. Remove the air distribution duct. Refer to «AIR DISTRIBUTOR DUCT REPLACEMENT»(ref-188960-S22922877812005091100000) .
2. Disconnect the electrical connection from the recirculation actuator (1).
3. Remove the recirculation actuator retaining screws.
4. Remove the recirculation actuator.

Scheme 94

Scheme 95

1. Install the recirculation actuator. NOTE: Refer to «FASTENER NOTICE»(ref-175132-S17785009232005041500000) .
2. Install the recirculation actuator retaining screws. Tighten Tighten the screws to 1.6 N.m (14 lb in).
3. Connect the electrical connector to the recirculation actuator (1).
4. Install the air distribution duct. Refer to «AIR DISTRIBUTOR DUCT REPLACEMENT»(ref-188960-S22922877812005091100000) .

Scheme 96

Scheme 97

Scheme 98

1. Remove the floor air outlet duct extension (1) from the floor duct (2).
2. Remove the Body Control Module. Refer to «BODY CONTROL MODULE REPLACEMENT»(ref-189011-S14569119932005091300000) .
3. Disconnect the electrical connection at the mode actuator (10).
4. Remove the mode actuator mounting screws from the HVAC module.
5. Remove the mode actuator as an assembly with the actuator cam.

Scheme 99

Scheme 100

Scheme 101

1. Install the mode actuator as an assembly with the actuator cam. Line up the heater/defroster lever with the mode actuator cam slot. Line up the A/C lever with the mode actuator cam. NOTE: Refer to «FASTENER NOTICE»(ref-175132-S17785009232005041500000) .
2. Install the mode actuator mounting screw to the HVAC module. Tighten Tighten the screw to 1.6 N.m (14 lb in).
3. Connect the electrical connection at the mode actuator (10).
4. Install the Body Control Module. Refer to «BODY CONTROL MODULE REPLACEMENT»(ref-189011-S14569119932005091300000) .
5. Install the floor air outlet duct extension (1) to the floor air duct (2).

Scheme 102

Scheme 103

Scheme 104

1. Remove the floor air outlet duct extension (1) from the floor duct (2).
2. Remove the center console. Refer to «CONSOLE REPLACEMENT (EXCEPT PRO)»(ref-189012-S00094609632005091100000) or «CONSOLE REPLACEMENT (PRO)»(ref-189012-S37598895202005091100000) .
3. Remove the screws from the center console duct.
4. Remove the center console duct.
5. Disconnect the electrical connection from the mode actuator (10).
6. Remove the mode actuator mounting screws from the HVAC module.
7. Remove the mode actuator as an assembly with the actuator cam.

Scheme 105

Scheme 106

Scheme 107

1. Install the mode actuator as an assembly with the actuator cam. Line up the heater/defroster valve lever with the mode actuator cam slot. Line up the A/C valve lever with the mode actuator cam. NOTE: Refer to «FASTENER NOTICE»(ref-175132-S17785009232005041500000) .
2. Install the mode actuator mounting screw to the HVAC module. Tighten Tighten the screw to 1.6 N.m (14 lb in).
3. Connect the electrical connection at the mode actuator (10).
4. Install the center console duct.
5. Install the screws from the center console duct. Tighten Tighten the screw to 1.6 N.m (14 lb in).
6. Install the center console. Refer to «CONSOLE REPLACEMENT (EXCEPT PRO)»(ref-189012-S00094609632005091100000) or «CONSOLE REPLACEMENT (PRO)»(ref-189012-S37598895202005091100000) .
7. Install the floor air outlet duct extension (1) to the floor air duct (2).

Scheme 108

1. Remove the I/P carrier. Refer to «INSTRUMENT PANEL (I/P) CARRIER REPLACEMENT»(ref-189012-S37044169372005091100000) .
2. Disconnect the electrical connector (4) from the left air temperature actuator (3).
3. Remove the screws from the left air temperature actuator (3).
4. Remove the left air temperature actuator (3) from the HVAC module assembly (2).

Scheme 109

1. Install the left air temperature actuator (3) from the HVAC module assembly (2). NOTE: Refer to «FASTENER NOTICE»(ref-175132-S17785009232005041500000) .
2. Install the screws to the left air temperature actuator (3). Tighten Tighten the screws to 2 N.m (18 lb in).
3. Connect the electrical connector to the left air temperature actuator.
4. Install the I/P carrier. Refer to «INSTRUMENT PANEL (I/P) CARRIER REPLACEMENT»(ref-189012-S37044169372005091100000) .
5. Reprogram the air temperature actuator. Refer to «Re-Calibrating Actuators»(ref-188963-S03678570172005091100000) .

Scheme 110

1. Remove the I/P insulator panel. Refer to «INSULATOR REPLACEMENT -- INSTRUMENT PANEL (I/P)»(ref-189012-S22565254502005091100000) .
2. Disconnect the electrical connector (1) from the right air temperature actuator (2).
3. Remove the screws from the right air temperature actuator (2).
4. Remove the right air temperature actuator (2) from the HVAC module assembly (3).

Scheme 111

1. Install the right air temperature actuator (2) to the HVAC module assembly (3). NOTE: Refer to «FASTENER NOTICE»(ref-175132-S17785009232005041500000) .
2. Install the screws to the right air temperature actuator (2). Tighten Tighten the screws to 2 N.m (18 lb ft).
3. Install the electrical connector (1) to the right air temperature actuator (2).
4. Install the I/P insulator panel. Refer to «INSULATOR REPLACEMENT -- INSTRUMENT PANEL (I/P)»(ref-189012-S22565254502005091100000) .
5. Reprogram the Right air temperature actuator. Refer to «Re-Calibrating Actuators»(ref-188963-S03678570172005091100000) .

Scheme 112

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).

Scheme 113

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

Scheme 114

1. Remove the upper left air temperature sensor (2) from the air distributor duct (1).
2. Disconnect the electrical connector (3) from the upper left air temperature sensor (2).

Scheme 115

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).

Scheme 116

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).

Scheme 117

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).

Scheme 118

1. Remove the I/P lower closeout panel. Refer to «INSULATOR REPLACEMENT -- INSTRUMENT PANEL (I/P)»(ref-189012-S22565254502005091100000) .
2. Disconnect the electrical connector from the lower right air temperature sensor (1).
3. Remove the lower right air temperature sensor (1).

Scheme 119

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 I/P lower closeout panel. Refer to «INSULATOR REPLACEMENT -- INSTRUMENT PANEL (I/P)»(ref-189012-S22565254502005091100000) .

Scheme 120

1. Remove the Park/Turn Signal. Refer to «PARK/TURN SIGNAL LAMP REPLACEMENT (OLD STYLE)»(ref-189006-S40128327412005091300000) or «PARK/TURN SIGNAL LAMP REPLACEMENT (NEW STYLE)»(ref-189006-S07601375852005091300000) .
2. Disconnect the electrical connector from the ambient air temperature sensor (3).
3. Remove the ambient air temperature sensor (3).

Scheme 121

1. Install the ambient air temperature sensor (3).
2. Connect the electrical connector to the ambient air temperature sensor (3).
3. Install the Park/Turn Signal. Refer to «PARK/TURN SIGNAL LAMP REPLACEMENT (OLD STYLE)»(ref-189006-S40128327412005091300000) or «PARK/TURN SIGNAL LAMP REPLACEMENT (NEW STYLE)»(ref-189006-S07601375852005091300000) .

Scheme 122

Scheme 123

1. Remove the left windshield garnish molding. Refer to «GARNISH MOLDING REPLACEMENT-WINDSHIELD PILLAR»(ref-189026-S38455433342005091100000) .
2. Remove the left center pillar assist handle. Refer to «ASSIST HANDLE REPLACEMENT-REAR»(ref-189026-S09998213812005091100000) .
3. Remove the left center pillar garnish molding. Refer to «GARNISH MOLDING REPLACEMENT-CENTER PILLAR»(ref-189026-S03090277532005091100000) .
4. Remove the left sunshade. Refer to «SUNSHADE REPLACEMENT»(ref-189026-S34624785062005091100000) .
5. Remove the retaining screws from the headliner.
6. Gently pull down the headliner.
7. Remove the inside air temperature sensor from the headliner.
8. Disconnect the electrical connector from the inside air temperature sensor.
9. Remove the inside air temperature sensor from the headliner.

Scheme 124

Scheme 125

1. Install the inside air temperature sensor to the headliner.
2. Connect the electrical connector to the inside air temperature sensor.
3. Install the screws to the headliner.
4. Install the left sunshade. Refer to «SUNSHADE REPLACEMENT»(ref-189026-S34624785062005091100000) .
5. Install the left center pillar garnish molding. Refer to «GARNISH MOLDING REPLACEMENT-CENTER PILLAR»(ref-189026-S03090277532005091100000) .
6. Install the left center assist handle. Refer to «ASSIST HANDLE REPLACEMENT-REAR»(ref-189026-S09998213812005091100000) .
7. Install the left windshield garnish molding. Refer to «GARNISH MOLDING REPLACEMENT-WINDSHIELD PILLAR»(ref-189026-S38455433342005091100000) .

Scheme 126

1. Remove the instrument panel upper trim panel. Refer to «TRIM PANEL REPLACEMENT -- INSTRUMENT PANEL (I/P) UPPER»(ref-189012-S24193601622005091100000) .
2. Turn the sun load sensor (2) 1/4 turn and remove it from the upper trim panel.
3. Disconnect the electrical connector.

Scheme 127

1. Connect the electrical connector.
2. Install the sun load sensor (2) to the upper trim panel, turning it 1/4 turn to secure it in place.
3. Install the instrument panel upper trim panel. Refer to «TRIM PANEL REPLACEMENT -- INSTRUMENT PANEL (I/P) UPPER»(ref-189012-S24193601622005091100000) .