HVAC Systems - Automatic: Removal & Installation Chevrolet Suburban X

Installation Procedure

Important: The key should be in the off position when connecting the electrical connectors to ensure proper calibration.

Scheme 144

1. Connect the electrical connectors to the HVAC control module.
2. Install the HVAC control module into the instrument panel. NOTE: Refer to «FASTENER NOTICE»(ref-175132-S17785009232005041500000) in Cautions and Notices.
3. Install the screws to the HVAC control module. Tighten Tighten the screws to 1.9 N.m (17 lb in).
4. Install the accessory switch to the instrument panel. Refer to ACCESSORY SWITCH REPLACEMENT in Instrument Panel, Gages and Console.
5. Install the instrument panel accessory trim plate. Refer to BEZEL REPLACEMENT - INSTRUMENT PANEL (I/P) CLUSTER in Instrument Panel, Gages and Console. 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.
6. Start the vehicle and let run for one minute.

Scheme 145

1. Remove the console roof screw.
2. Remove the console (1) from the headliner.
3. Disconnect the electrical connectors (3) from the console (1).
4. Remove the console (1) from the vehicle.
5. Remove the HVAC control assembly (2) from the console (1) by depressing the 4 tabs on the back of the HVAC control assembly (2).

Scheme 146

1. Install the HVAC control assembly (2) to the console (1).
2. Connect the electrical connectors (3) to the console (1).
3. Install the console (1) to the headliner. NOTE: Refer to «FASTENER NOTICE»(ref-175132-S17785009232005041500000) in Cautions and Notices.
4. Install the overhead console screw. Tighten Tighten the screw to 2 N.m (18 lb in).

Scheme 147

1. Remove the right rear quarter trim panel. Refer to TRIM PANEL REPLACEMENT - REAR QUARTER - RIGHT (UTILITY) or TRIM PANEL REPLACEMENT - REAR QUARTER - RIGHT (SUBURBAN) in Interior Trim.
2. Disconnect the electrical connectors (3,4) from the auxiliary HVAC control module (1).
3. Remove the screws from the auxiliary HVAC control module (1).
4. Remove the auxiliary HVAC control module (1) from the auxiliary HVAC module (2).

Scheme 148

1. Install the auxiliary HVAC control module (1) to the auxiliary HVAC module (2). NOTE: Refer to «FASTENER NOTICE»(ref-175132-S17785009232005041500000) in Cautions and Notices.
2. Install the screws to the auxiliary HVAC control module (1). Tighten Tighten the screws to 1.6 N.m (14 lb in).
3. Connect the electrical connectors (3,4) to the auxiliary HVAC control module (1).
4. Install the right rear quarter trim panel. Refer to TRIM PANEL REPLACEMENT - REAR QUARTER - RIGHT (UTILITY) or TRIM PANEL REPLACEMENT - REAR QUARTER - RIGHT (SUBURBAN) in Interior Trim.

Scheme 149

Scheme 150

1. If equipped, remove the sound insulator panel. Refer to INSULATOR REPLACEMENT - INSTRUMENT PANEL (I/P) in Instrument Panel, Gages and Console.
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 151

Scheme 152

1. Install the blower motor control processor (2) to the HVAC module (1). NOTE: Refer to «FASTENER NOTICE»(ref-175132-S17785009232005041500000) in Cautions and Notices.
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) in Instrument Panel, Gages and Console.

Scheme 153

1. Remove the right rear quarter trim panel. Refer to TRIM PANEL REPLACEMENT - REAR QUARTER - RIGHT (UTILITY) or TRIM PANEL REPLACEMENT - REAR QUARTER - RIGHT (SUBURBAN) in Interior Trim.
2. Disconnect the electrical connector from the auxiliary blower motor processor (1).
3. Remove the retaining screws from the auxiliary blower motor processor (1).
4. Remove the auxiliary blower motor processor (1) from the auxiliary HVAC module (2).

Scheme 154

1. Install the auxiliary blower motor processor (1) to the auxiliary HVAC module (2). NOTE: Refer to «FASTENER NOTICE»(ref-175132-S17785009232005041500000) in Cautions and Notices.
2. Install the retaining screws to the auxiliary blower motor processor (1). Tighten Tighten the screws to 1.6 N.m (14 lb in).
3. Connect the electrical connector to the auxiliary blower motor processor (1).
4. Install the right rear quarter trim panel. Refer to TRIM PANEL REPLACEMENT - REAR QUARTER - RIGHT (UTILITY) or TRIM PANEL REPLACEMENT - REAR QUARTER - RIGHT (SUBURBAN) in Interior Trim.

Scheme 155

Scheme 156

1. Remove the air distribution duct. Refer to AIR DISTRIBUTOR DUCT REPLACEMENT in Heating, Ventilation and Air Conditioning.
2. Disconnect the electrical connection from the recirculation actuator (1).
3. Remove the recirculation actuator retaining screws.
4. Remove the recirculation actuator.

Scheme 157

Scheme 158

1. Install the recirculation actuator. NOTE: Refer to «FASTENER NOTICE»(ref-175132-S17785009232005041500000) in Cautions and Notices.
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 in Heating, Ventilation and Air Conditioning.

Scheme 159

Scheme 160

Scheme 161

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 in Body Control System.
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 162

Scheme 163

Scheme 164

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) in Cautions and Notices.
2. Install the mode actuator mounting screws to the HVAC module. Tighten Tighten the screws 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 in Body Control System.
5. Install the floor air outlet duct extension (1) to the floor air duct (2).

Scheme 165

Scheme 166

Scheme 167

1. Remove the floor air outlet duct extension (1) from the floor duct (2).
2. Remove the center console. Refer to CONSOLE REPLACEMENT (WITH CONSOLE MOUNTING BRACKET) or CONSOLE REPLACEMENT (W/O CONSOLE MOUNTING BRACKET) in Instrument Panel, Gages and Console.
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 168

Scheme 169

Scheme 170

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) in Cautions and Notices.
2. Install the mode actuator mounting screws to the HVAC module. Tighten Tighten the screws 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 to the center console duct. Tighten Tighten the screws to 1.6 N.m (14 lb in).
6. Install the center console. Refer to CONSOLE REPLACEMENT (WITH CONSOLE MOUNTING BRACKET) or CONSOLE REPLACEMENT (W/O CONSOLE MOUNTING BRACKET) in Instrument Panel, Gages and Console.
7. Install the floor air outlet duct extension (1) to the floor air duct (2).

Scheme 171

1. Remove the I/P carrier. Refer to INSTRUMENT PANEL (I/P) CARRIER REPLACEMENT in Instrument Panel, Gages 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).

Scheme 172

1. Install the right air temperature actuator (3) from the HVAC module assembly (2). NOTE: Refer to «FASTENER NOTICE»(ref-175132-S17785009232005041500000) in Cautions and Notices.
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 in Instrument Panel, Gages, and Console.
5. Reprogram the air temperature actuator. Refer to RE-CALIBRATING ACTUATORS .

Scheme 173

1. Remove the I/P insulator panel. Refer to INSULATOR REPLACEMENT - INSTRUMENT PANEL (I/P) in Instrument Panel, Gages 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).

Scheme 174

1. Install the left air temperature actuator (2) to the HVAC module assembly (3). NOTE: Refer to «FASTENER NOTICE»(ref-175132-S17785009232005041500000) in Cautions and Notices.
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) in Instrument Panel, Gages and Console.
5. Reprogram the left air temperature actuator. Refer to RE-CALIBRATING ACTUATORS .

Scheme 175

1. Remove the right rear quarter trim panel. Refer to TRIM PANEL REPLACEMENT - REAR QUARTER - RIGHT (UTILITY) or TRIM PANEL REPLACEMENT - REAR QUARTER - RIGHT (SUBURBAN) in Interior Trim.
2. Disconnect the electrical connector from the auxiliary air temperature actuator.
3. Remove the retaining screws from the auxiliary air temperature actuator.
4. Remove the auxiliary air temperature actuator (1) from the rear auxiliary HVAC module.

Scheme 176

1. Install the auxiliary air temperature actuator (1) to the auxiliary HVAC module. NOTE: Refer to «FASTENER NOTICE»(ref-175132-S17785009232005041500000) in Cautions and Notices.
2. Install the auxiliary air temperature actuator retaining screws. Tighten Tighten the screws to 1.6 N.m (14 lb in).
3. Connect the electrical connector to the auxiliary air temperature actuator.
4. Install the right rear quarter trim panel. Refer to TRIM PANEL REPLACEMENT - REAR QUARTER - RIGHT (UTILITY) or TRIM PANEL REPLACEMENT - REAR QUARTER - RIGHT (SUBURBAN) in Interior Trim.

Scheme 177

1. Remove the right rear quarter trim panel. Refer to TRIM PANEL REPLACEMENT - REAR QUARTER - RIGHT (UTILITY) or TRIM PANEL REPLACEMENT - REAR QUARTER - RIGHT (SUBURBAN) in Interior Trim.
2. Disconnect the electrical connector from the mode actuator (1).
3. Remove the retaining screws from the mode actuator.
4. Remove the mode actuator (1) from the vehicle.

Scheme 178

1. Install the mode actuator (1) to the vehicle. NOTE: Refer to «FASTENER NOTICE»(ref-175132-S17785009232005041500000) in Cautions and Notices.
2. Install the screws to the mode actuator (1). Tighten Tighten the screws to 1.6 N.m (14 lb in).
3. Connect the electrical connector to the mode actuator.
4. Install the left rear quarter trim panel. Refer to TRIM PANEL REPLACEMENT - REAR QUARTER - RIGHT (UTILITY) or TRIM PANEL REPLACEMENT - REAR QUARTER - RIGHT (SUBURBAN) in Interior Trim.

Scheme 179

1. Remove the right rear quarter trim panel. Refer to TRIM PANEL REPLACEMENT - REAR QUARTER - RIGHT (UTILITY) or TRIM PANEL REPLACEMENT - REAR QUARTER - RIGHT (SUBURBAN) in Interior Trim.
2. Disconnect the electrical connector from the mode actuator (1).
3. Remove the retaining screws from the mode actuator.
4. Remove the mode actuator (1) from the vehicle.

Scheme 180

1. Install the mode actuator (1) to the vehicle. NOTE: Refer to «FASTENER NOTICE»(ref-175132-S17785009232005041500000) in Cautions and Notices.
2. Install the screws to the mode actuator (1). Tighten Tighten the screws to 1.6 N.m (14 lb in).
3. Connect the electrical connector to the mode actuator.
4. Install the right rear quarter trim panel. Refer to TRIM PANEL REPLACEMENT - REAR QUARTER - RIGHT (UTILITY) or TRIM PANEL REPLACEMENT - REAR QUARTER - RIGHT (SUBURBAN) in Interior Trim.

Scheme 181

1. Remove the right side C-pillar trim panel. Refer to TRIM PANEL REPLACEMENT - REAR QUARTER - RIGHT (UTILITY) or TRIM PANEL REPLACEMENT - REAR QUARTER - RIGHT (SUBURBAN) in Interior Trim.
2. Disconnect the electrical connector from the rear upper A/C temperature sensor (11).
3. Remove the rear upper A/C temperature sensor (11) from the air distribution duct.

Scheme 182

1. Install the rear upper A/C temperature sensor (11) to the air distribution duct.
2. Connect the electrical connector to the rear upper A/C temperature sensor (11).
3. Install the right side C-pillar trim panel. Refer to TRIM PANEL REPLACEMENT - REAR QUARTER - RIGHT (UTILITY) or TRIM PANEL REPLACEMENT - REAR QUARTER - RIGHT (SUBURBAN) in Interior Trim.

Scheme 183

1. Remove the I/P upper trim panel. Refer to TRIM PANEL REPLACEMENT - INSTRUMENT PANEL (I/P) UPPER in Instrument Panel, Gages, and Console.
2. Disconnect the electrical connector (1) from the upper right air temperature sensor (2).
3. Remove the upper right air temperature sensor (1) from the air distributor duct (3).

Scheme 184

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. Install the I/P upper trim panel. Refer to TRIM PANEL REPLACEMENT - INSTRUMENT PANEL (I/P) UPPER in Instrument Panel, Gages, and Console.

Scheme 185

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 186

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 187

1. Remove the right side C-pillar trim panel. Refer to TRIM PANEL REPLACEMENT - REAR QUARTER - RIGHT (UTILITY) or TRIM PANEL REPLACEMENT - REAR QUARTER - RIGHT (SUBURBAN) in Interior Trim.
2. Disconnect the electrical connector from the auxiliary lower A/C temperature sensor (10).
3. Remove the auxiliary lower A/C temperature sensor (10) from the air distribution duct.

Scheme 188

1. Install the rear lower A/C temperature sensor (10) to the air distribution duct.
2. Connect the electrical connector to the rear lower A/C temperature sensor (10).
3. Install the right side C-pillar trim panel. Refer to TRIM PANEL REPLACEMENT - REAR QUARTER - RIGHT (UTILITY) or TRIM PANEL REPLACEMENT - REAR QUARTER - RIGHT (SUBURBAN) in Interior Trim.

Scheme 189

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 190

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 191

1. Remove the I/P lower closeout panel. Refer to INSULATOR REPLACEMENT - INSTRUMENT PANEL (I/P) in Instrument Panel, Gages, and Console.
2. Remove the right floor duct. Refer to AIR OUTLET DUCT REPLACEMENT - FLOOR, RH in Heating, Ventilation and Air Conditioning.
3. Remove the center console. Refer to CONSOLE REPLACEMENT (WITH CONSOLE MOUNTING BRACKET) or CONSOLE REPLACEMENT (W/O CONSOLE MOUNTING BRACKET) in Instrument Panel, Gages, and Console.
4. Disconnect the electrical connector from the lower right air temperature sensor (1).
5. Remove the lower right air temperature sensor (1).

Scheme 192

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 center console. Refer to CONSOLE REPLACEMENT (WITH CONSOLE MOUNTING BRACKET) or CONSOLE REPLACEMENT (W/O CONSOLE MOUNTING BRACKET) in Instrument Panel, Gages, and Console.
4. Install the right floor duct. Refer to AIR OUTLET DUCT REPLACEMENT - FLOOR, RH in Heating, Ventilation and Air Conditioning.
5. Install the I/P lower closeout panel. Refer to INSULATOR REPLACEMENT - INSTRUMENT PANEL (I/P) in Instrument Panel, Gages, and Console.

Scheme 193

1. Remove the radiator grille from the vehicle. Refer to GRILLE REPLACEMENT (CADILLAC) or GRILLE REPLACEMENT (AVALANCHE) in Exterior Trim.
2. Remove the push pin retainer from the sensor mounted on the radiator support brace.
3. Disconnect the electrical connector from the sensor.

Scheme 194

1. Connect the electrical connector to the sensor.
2. Install the sensor to the radiator support brace and install the push pin retainer.
3. Install the radiator grille to the vehicle. Refer to GRILLE REPLACEMENT (CADILLAC) or GRILLE REPLACEMENT (AVALANCHE) in Exterior Trim.

Scheme 195

Scheme 196

1. Remove the left windshield garnish molding. Refer to GARNISH MOLDING REPLACEMENT - WINDSHIELD PILLAR in Interior Trim.
2. Remove the left center pillar assist handle. Refer to ASSIST HANDLE REPLACEMENT - REAR in Interior Trim.
3. Remove the left center pillar garnish molding. Refer to GARNISH MOLDING REPLACEMENT - CENTER PILLAR in Interior Trim.
4. Remove the left sunshade. Refer to SUNSHADE REPLACEMENT in Interior Trim.
5. Gently pull down the headliner.
6. Disconnect the electrical connector from the inside air temperature sensor.
7. Partially remove the inside air temperature sensor from the headliner.
8. Remove the sensor grille from the inside air temperature sensor.
9. Remove the inside air temperature sensor from the headliner.

Scheme 197

Scheme 198

1. Install the new sensor grille to the headliner.
2. Install the inside air temperature sensor to the headliner and sensor grille.
3. Connect the electrical connector to the inside air temperature sensor.
4. Install the left sunshade. Refer to GARNISH MOLDING REPLACEMENT - CENTER PILLAR in Interior Trim.
5. Install the left center pillar garnish molding. Refer to GARNISH MOLDING REPLACEMENT - CENTER PILLAR in Interior Trim.
6. Install the left center assist handle. Refer to ASSIST HANDLE REPLACEMENT - REAR in Interior Trim.
7. Install the left windshield garnish molding. Refer to GARNISH MOLDING REPLACEMENT - WINDSHIELD PILLAR in Interior Trim.

Scheme 199

Scheme 200

1. Remove the third pillar molding. Refer to TRIM REPLACEMENT - THIRD PILLAR (TAHOE / YUKON / ESCALADE / SUBURBAN) or TRIM REPLACEMENT - THIRD PILLAR (AVALANCHE / ESCALADE EXT) in Interior Trim.
2. Remove the left rear coat hook, if equipped. Refer to COAT HOOK REPLACEMENT in Interior Trim.
3. Remove the rear headliner retainers from the front headliner.
4. Carefully lower the headliner from the roof Velcro retainers.
5. Disconnect the electrical connector from the inside air temperature sensor.
6. Partially remove the auxiliary inside air temperature sensor from the headliner.
7. Remove the sensor grille from the auxiliary inside air temperature sensor.
8. Remove the auxiliary inside air temperature sensor from the headliner.

Scheme 201

Scheme 202

1. Install the new sensor grille to the headliner.
2. Install the inside air temperature sensor to the headliner and sensor grille.
3. Connect the electrical connector to the inside air temperature sensor.
4. Secure the headliner to the roof Velcro.
5. Install the rear headliner retainers to the front headliner.
6. Install the left rear coat hook, if equipped. Refer to COAT HOOK REPLACEMENT in Interior Trim.
7. Install the third pillar molding. Refer to TRIM REPLACEMENT - THIRD PILLAR (TAHOE / YUKON / ESCALADE / SUBURBAN) or TRIM REPLACEMENT - THIRD PILLAR (AVALANCHE / ESCALADE EXT) in Interior Trim.

Scheme 203

1. Remove the instrument panel upper trim panel. Refer to TRIM PANEL REPLACEMENT - INSTRUMENT PANEL (I/P) UPPER in Instrument Panel, Gages and Console.
2. Remove the sun load sensor (2) from the upper trim panel.
3. Disconnect the electrical connector.

Scheme 204

1. Connect the electrical connector.
2. Install the sun load sensor (2) to the upper trim panel.
3. Install the instrument panel upper trim panel. Refer to TRIM PANEL REPLACEMENT - INSTRUMENT PANEL (I/P) UPPER in Instrument Panel, Gages and Console.