Contents Wiring diagrams Section: Automatic HVAC System All sections

HVAC System - Automatic: Wiring GMC Envoy II

Automatic HVAC System ~2034 words

HVAC Connector End Views

A/C Compressor Clutch Assembly Connector Part Information 12110293 3-Way F Metri-Pack 150 Series Sealed (BK) Pin Wire Color Circuit No. Function A BK 350 Ground B D-GN 59 A/C Compressor Clutch Supply Voltage C L-GN 2278 A/C Compressor Status Signal

A/C Low Pressure Switch Connector Part Information 12052644 2-Way F Metri-Pack 150 Series Sealed (GY) Pin Wire Color Circuit No. Function A D-BU 204 A/C Low Pressure Sensor Signal B BK 250 Ground

A/C Refrigerant Pressure Sensor (4.2L) Connector Part Information 15466099 3-Way F GT 150 Series Sealed (BK) Pin Wire Color Circuit No. Function 1 BK 2751 Low Reference 2 GY 2700 5-Volt Reference 3 RD/BK 380 A/C Refrigerant Pressure Sensor Signal

A/C Refrigerant Pressure Sensor (5.3L) Connector Part Information 15477863 3-Way F GT 150 Series Sealed (BK) Pin Wire Color Circuit No. Function 1 BK 2751 Low Reference 2 GY 2700 5-Volt Reference 3 RD/BK 380 A/C Refrigerant Pressure Sensor Signal

Air Temperature Actuator - Auxiliary (Long Wheel Base Except XUV) Connector Part Information 12064982 5-Way F Metri-Pack 100 Series (BK) Pin Wire Color Circuit No. Function 1 GY/RD 2598 Low Reference 2 D-BU 1199 Auxiliary Air Temperature Door Position Signal 3 GY/BK 598 5-Volt Reference 4 RD 2600 Auxiliary Actuator Door Control 5 YE 2214 Auxiliary Air Temperature Door Control

Air Temperature Actuator - Left Connector Part Information 12040953 6-Way F Micro-Pack 100 Series (BK) Pin Wire Color Circuit No. Function 5 BN 341 Ignition 3 Voltage 6 D-BU 1199 Left Air Temperature Door Control 7 YE 1791 Low Reference 8 - - Not Used 9 L-BU 733 Left Air Temperature Door Position Signal 10 L-BU/BK 1688 5-Volt Reference

Air Temperature Actuator - Right Connector Part Information 12040953 6-Way F Micro-Pack 100 Series (BK) Pin Wire Color Circuit No. Function 5 BN 341 Ignition 3 Voltage 6 WH/BK 1236 Right Air Temperature Door Control 7 YE 1791 Low Reference 8 - - Not Used 9 D-BU 1646 Right Air Temperature Door Position Signal 10 L-BU/BK 1688 5-Volt Reference

Air Temperature Sensor - Lower Left Connector Part Information 12047662 2-Way F Metri-Pack 150 Series (BK) Pin Wire Color Circuit No. Function A BN 718 Low Reference B WH/BK 2339 Lower Left Air Temperature Sensor Signal

Air Temperature Sensor - Lower Right Connector Part Information 12047662 2-Way F Metri-Pack 150 Series (BK) Pin Wire Color Circuit No. Function A BN 718 Low Reference B GY/BK 2337 Lower Right Air Temperature Sensor Signal

Air Temperature Sensor - Upper Left Connector Part Information 12047662 2-Way F Metri-Pack 150 Series (BK) Pin Wire Color Circuit No. Function A BN 718 Low Reference B WH 2338 Upper Left Air Temperature Sensor Signal

Air Temperature Sensor - Upper Right Connector Part Information 12047662 2-Way F Metri-Pack 150 Series (BK) Pin Wire Color Circuit No. Function A BN 718 Low Reference B GY 2336 Upper Right Air Temperature Sensor Signal

Air Temperature Sensor Assembly - Inside Connector Part Information 12047786 4-Way M Metri-Pack 150 Series (BK) Pin Wire Color Circuit No. Function A D-GN 734 Inside Air Temperature Sensor Signal B WH/BK 1236 Inside Air Temperature Sensor Assembly Control C BK 1350 Ground D BN 718 Low Reference

Ambient Air Temperature Sensor Connector Part Information 12052642 2-Way F Metri-Pack 150 Series Sealed (L-GN) Pin Wire Color Circuit No. Function A L-GN/BK 735 Ambient Air Temperature Sensor Signal B BN 718 Low Reference

Ambient Light/Sunload Sensor Assembly Connector Part Information 12064760 4-Way F Metri-Pack 150 Series (BK) Pin Wire Color Circuit No. Function A L-BU/BK 2519 Left Sunload Sensor Signal B GY 2521 Right Sunload Sensor Signal C BK 279 Ambient Light Sensor Low Reference D WH 278 Ambient Light Sensor Signal

Blower Motor Connector Part Information 12066681 2-Way F Metri-Pack 630 Series, Sealed, Pull-to-Seat (BK) Pin Wire Color Circuit No. Function A PU 65 Blower Motor Supply Voltage B BK 850 Ground

Blower Motor - Auxiliary (Long Wheel Base Except XUV) Connector Part Information 15326870 2-Way F GT 280 Series (BK) Pin Wire Color Circuit No. Function A OG 840 Battery Positive Voltage B BK 250 Ground

Blower Motor - Auxiliary (Short Wheel Base and XUV) Connector Part Information 15332135 4-Way F GT 150 Series (BK) Pin Wire Color Circuit No. Function A D-GN 2347 Auxiliary Blower Motor High Speed Control B D-BU 2348 Auxiliary Blower Motor Medium Speed Control C BK 2250 Ground D - - Not Used

Blower Motor Control Module Connector Part Information 12129489 3-Way F Metri-Pack 280 Series Flexlock (BK) Pin Wire Color Circuit No. Function A RD 542 Battery Positive Voltage B PU/WH 760 Blower Motor Speed Control C BK 2250 Ground

Blower Motor Control Processor - Auxiliary (Long Wheel Base Except XUV) Connector Part Information 15326631 4-Way F GT 280 Series (BK) Pin Wire Color Circuit No. Function A BK 1650 Ground B BK 250 Ground C GY 2604 Auxiliary Blower Motor Speed Control D OG 840 Battery Positive Voltage

Blower Motor Fuse - Auxiliary (Long Wheel Base Except XUV) Connector Part Information 12010105 Fuse Holder (BK) Pin Wire Color Circuit No. Function A OG 840 Battery Positive Voltage B OG 840 Battery Positive Voltage OG 840 Battery Positive Voltage

Blower Motor Switch - Front Auxiliary (Long Wheel Base Except XUV) Connector Part Information 12047781 3-Way F Metri-Pack 150 Series (BLK) Pin Wire Color Circuit No. Function A YE 2277 Auxiliary HVAC Enable Control B GY 2598 Low Reference C BN/WH 230 Instrument Panel Lamps Dimming Control

Console Mode Actuator - Auxiliary (Long Wheel Base Except XUV) Connector Part Information 12064982 5-Way F Micro-Pack 100 Series (BK) Pin Wire Color Circuit No. Function 1 GY 2598 Low Reference 2 D-BU 5433 Console Mode Door Position Signal 3 GY 598 5-Volt Reference 4 GY 2599 Auxiliary Mode Door Control 5 D-GN 5434 Console Mode Door Control

Console Mode Actuator - Auxiliary (Short Wheel Base and XUV) Connector Part Information 12064982 5-Way F Metri-Pack 100 Series (BK) Pin Wire Color Circuit No. Function 1 BN 341 Ignition 3 Voltage 2 WH 119 Auxiliary Mode Door Control 3 BK 2250 Ground 4-5 - - Not Used

Coolant Bypass Valve (Long Wheel Base Except XUV) Connector Part Information 12052641 2-Way F Metri-Pack 150 Series Sealed (BK) Pin Wire Color Circuit No. Function A GY/BK 1596 Coolant Bypass Solenoid Control B BK 250 Ground

Defrost Actuator Connector Part Information 12040953 6-Way F Micro-Pack 100 Series (BK) Pin Wire Color Circuit No. Function 5 BN 341 Ignition 3 Voltage 6 TN/BK 2274 Defrost Door Control 7 YE 1791 Low Reference 8 - - Not Used 9 L-GN/BK 2276 Defrost Door Position Signal 10 L-BU/BK 1688 5-Volt Reference

HVAC Control Module - Auxiliary (Short Wheel Base and XUV) Connector Part Information 12084944 16-Way F Micro Pack 100 Series (BK) Pin Wire Color Circuit No. Function A1 OG 4340 Battery Positive Voltage A2 GY 2289 Rear HVAC/Audio Class 2 Serial Data A3 - - Not Used A4 BK 2250 Ground A5 BN/WH 230 Instrument Panel Lamps Dimming Control A6 WH 119 Auxiliary Mode Door Control A7 D-GN 2347 Auxiliary Blower Motor High Speed Control A8 D-BU 2348 Auxiliary Blower Motor Medium Speed Control B1 BN 199 Left Rear Speaker Output (+) (w/o UQA) BN 199 Left Rear Low Level Audio Signal (+) (w/UQA) B2 D-BU 46 Right Rear Speaker Output (+) (w/o UQA) D-BU 46 Right Rear Low Level Audio Signal (+) (w/UQA) B3 BN 599 Left Rear Low Level Audio Signal (+) B4 D-BU 546 Right Rear Low Level Audio Signal (+) B5 YE 116 Left Rear Speaker Output (-) (w/o UQA) YE 116 Rear Low Level Audio Signal (-) (w/UQA) B6 L-BU 115 Right Rear Speaker Output (-) (w/o UQA) L-BU 115 Right Rear Low Level Audio Signal (-) (w/UQA) B7 BN 1547 Left Rear Low Level Audio Signal (-) B8 BK 1946 Right Rear Low Level Audio Signal (-)

HVAC Control Module - Auxiliary (Long Wheel Base Except XUV) Connector Part Information 12110113 32-Way F Micro-Pack 100 Series Sealed (RD) Pin Wire Color Circuit No. Function A1 BN 1547 Left Rear Low Level Audio Signal (-) A2 BK 1946 Right Rear Low Level Audio Signal (-) A3 YE 116 Left Rear Speaker Output (-) (w/o UQA) YE 116 Rear Low Level Audio Signal (-) (w/UQA) A4 L-BU 115 Right Rear Speaker Output (-) (w/o UQA) L-BU 115 Right Rear Low Level Audio Signal (-) (w/UQA) A5 BN 199 Left Rear Speaker Output (+) (w/o UQA) BN 199 Left Rear Low Level Audio Signal (+) (w/UQA) A6 D-BU 46 Right Rear Speaker Output (+) (w/o UQA) D-BU 46 Right Rear Low Level Audio Signal (+) (w/UQA) A7 BN 599 Left Rear Low Level Audio Signal (+) A8 D-BU 546 Right Rear Low Level Audio Signal (+) A9 - - Not Used A10 D-BU 5433 Console Mode Door Position Signal A11 GY 2599 Auxiliary Mode Door Control A12 YE 2214 Auxiliary Air Temperature Door Control A13 GY 598 5-Volt Reference A14 GY 2603 TXV Solenoid Control A15 - - Not Used A16 OG 4340 Battery Positive Voltage B1 BN/WH 230 Instrument Panel Lamps Dimming Control B2 GY 2289 Rear HVAC/Audio Class 2 Serial Data B3 - - Not Used B4 GY 2604 Auxiliary Blower Motor Speed Control B5-B9 - - Not Used B10 BN/WH 2601 Auxiliary Mode Door Position Signal B11 YE 2277 Auxiliary HVAC Enable Control B12 D-BU 1199 Auxiliary Air Temperature Door Position Signal B13 D-GN 5434 Console Mode Door Control B14 RD 2600 Auxiliary Actuator Door Control B15 GY 2598 Low Reference B16 BK 2250 Ground

HVAC Control Module C1 Connector Part Information 12110206 24-Way F Micro-Pack 100 Series (L-BU) Pin Wire Color Circuit No. Function A1 D-GN 1614 Recirculation Door Control A2 D-BU 1646 Right Air Temperature Door Position Signal A3 L-BU 733 Left Air Temperature Door Position Signal A4 L-GN/BK 2276 Defrost Door Position Signal A5 L-GN 2275 Mode Door Position Signal A6 - - Not Used A7 BN/WH 230 Instrument Panel Lamps Dimming Control A8 BK/WH 751 Ground A9 GY/BK 1596 Coolant Bypass Solenoid Control (Long Wheel Base Except XUV) A10-A11 - - Not Used A12 D-BU 204 A/C Low Pressure Sensor Signal B1 WH/BK 1236 Right Air Temperature Door Control B2 D-BU 1199 Left Air Temperature Door Control B3 TN/BK 2274 Defrost Door Control B4 TN 2273 Mode Door Control B5 BN 341 Ignition 3 Voltage B6 YE 1791 Low Reference B7 OG 4340 Battery Positive Voltage B8 L-BU/BK 1688 5-Volt Reference B9 BK 2250 Ground B10 - - Not Used B11 WH 1038 Class 2 Serial Data B12 L-GN 2278 A/C Compressor Status Signal

HVAC Control Module C2 Connector Part Information 15336594 12-Way F Micro Pack 100 Series (L-GY) Pin Wire Color Circuit No. Function A D-GN 734 Inside Air Temperature Sensor Signal B L-GN/BK 735 Ambient Air Temperature Sensor Signal C WH 2338 Upper Left Air Temperature Sensor Signal D GY 2336 Upper Right Air Temperature Sensor Signal E WH/BK 2339 Lower Left Air Temperature Sensor Signal F GY/BK 2337 Lower Right Air Temperature Sensor Signal G PU 1838 Recirculation Door Position Signal H-J - - Not Used K BN 718 Low Reference L WH/BK 1236 Inside Air Temperature Sensor Assembly Control M PU/WH 760 Blower Motor Speed Control

Mode Actuator Connector Part Information 12040953 6-Way F Micro-Pack 100 Series (BK) Pin Wire Color Circuit No. Function 5 BN 341 Ignition 3 Voltage 6 TN 2273 Mode Door Control 7 YE 1791 Low Reference 8 - - Not Used 9 L-GN 2275 Mode Door Position Signal 10 L-BU/BK 1688 5-Volt Reference

Mode Actuator - Auxiliary (Long Wheel Base Except XUV) Connector Part Information 12064982 5-Way F Micro-Pack 100 Series (BK) Pin Wire Color Circuit No. Function 1 GY/RD 2598 Low Reference 2 BN/WH 2601 Auxiliary Mode Door Position Signal 3 GY/BK 598 5-Volt Reference 4 RD 2600 Auxiliary Actuator Door Control 5 GY/WH 2599 Auxiliary Mode Door Control

Recirculation Actuator Connector Part Information 12040953 6-Way F Micro-Pack 100 Series (BK) Pin Wire Color Circuit No. Function 5 BN 341 Ignition 3 Voltage 6 D-GN 1614 Recirculation Door Control 7 YE 1791 Low Reference 8 - - Not Used 9 PU 1838 Recirculation Door Position Signal 10 L-BU/BK 1688 5-Volt Reference

Schematic Reference

HVAC Schematics

Connector End View Reference

HVAC Connector End Views