HVAC Connector End Views
A/C Compressor Connector Part Information 12162017 2-Way F Metri-Pack 150 Series (MD GRY) Pin Wire Color Circuit No. Function A BLK 550 Ground B DK GRN 59 A/C Compressor Clutch Solenoid Feed
A/C Compressor High Pressure Cutout Switch Connector Part Information 15317968 2-Way F Micro-Pack 100 W Series (BLK) Pin Wire Color Circuit No. Function A LT BLU 203 Air Conditioning Refrigerant High Pressure Cutout Switch B DK GRN/WHT 762 Air Conditioning Request Signal
A/C Compressor Low Pressure Cycling Switch (ALL) Connector Part Information 12052644 2-Way F Metri-Pack 150 Series (LT GRY) Pin Wire Color Circuit No. Function A DK GRN 603 A/C Compressor Low Pressure Cycling Switch Output B BLK 550 Ground
A/C Automatic Recirculating Switch Connector Part Information 12124037 2-Way F Metri-Pack 150 (BLK) Pin Wire Color Circuit No. Function A DK BLU 604 A/C Automatic Recirculating Switch Output B BLK 150 Ground
A/C Air Temperature Sensor Connector Part Information 12047662 2-Way F Metri-Pack 150 Series (BLK) Pin Wire Color Circuit No. Function A LT GRN 404 Discharge Air Temperature Sensor Signal - Upper B BRN 718 Sensor Return
Rear A/C Air Temperature Sensor Connector Part Information 12047662 2-Way F Metri-Pack 150 Series (BLK) Pin Wire Color Circuit No. Function A TAN 517 Air Temperature Sensor Signal - Rear B BLK 808 Sensor Return
Heater Air Temperature Sensor Connector Part Information 12047662 2-Way F Metri-Pack 150 Series (BLK) Pin Wire Color Circuit No. Function A LT GRN 405 Heater Air Temperature Sensor Signal B BRN 718 Heater Air Temperature Sensor Return
Rear Heater Air Temperature Sensor (Suburban/Utility) Connector Part Information 12047662 2-Way F Metri-Pack 150 Series (BLK) Pin Wire Color Circuit No. Function A BLK 520 Heater Air Temperature Sensor Signal - Rear B BLK 808 Sensor Return
Outside Ambient Air Temperature Sensor Connector Part Information 12047661 2-Way F Metri-Pack 150 Series (BLK) Pin Wire Color Circuit No. Function A LT GRN/BLK 735 Outside Ambient Temperature Sensor Signal B BRN 718 Outside Ambient Temperature Sensor Return
Sun Load Temperature Sensor Connector Part Information 12047662 2-Way F Metri-Pack 150 Series (BLK) Pin Wire Color Circuit No. Function A LT BLU/BLK 590 Sun Load Temperature Sensor Signal B BRN 718 Sun Load Temperature Sensor Return
Inside Air Temperature Sensor (Over Head ) Connector Part Information 12045813 4-Way F Metri-Pack 150 (NAT) Pin Wire Color Circuit No. Function A DK GRN 734 Inside Temperature Sensor Signal B PNK 39 Fused Ignition Positive Voltage C BLK 1850 Ground D BRN 718 Inside Temperature Sensor Return
Blower Motor - Front/Rear Connector Part Information 12084957 2-Way F Metri-Pack 280 Series (BLK) Pin Wire Color Circuit No. Function A PPL 65 Blower Motor Feed B BLK 1050 Ground
Blower Motor Assembly (Front/Rear Module) Connector Part Information 12129489 3-Way F Metri-Pack 280 Series (BLK) Pin Wire Color Circuit No. Function A BLK 1050 Ground A BLK 1450 Ground (Suburban) B GRY/BLK 754 Blower Speed Signal - Control (Front) B PPL 374 Blower Speed Signal - Control (Rear-Suburban) C ORN 540 Fused Battery Positive Voltage C ORN 1740 Fused Battery Positive Voltage (Suburban)
HVAC Control Module - Front (Auto A/C) Connector Part Information 12045575 32-Way F Micro-Pack 100 Series (BLK) Pin Wire Color Circuit No. Function C1 LT BLU/BLK 590 Sun Load Sensor Input C2 BRN 404 Discharge Air Temperature Sensor Signal -(Upper) C3 LT GRN 405 Discharge Air Temperature Sensor Signal -(Lower) C4 LT BLU 733 Air Temperature Valve Position Sensor Signal C5 PPL 1838 Air Inlet Valve Position Sensor C6 BRN 341 Fused Positive Ignition Voltage C7 DK GRN 1614 Air Inlet Valve Motor Feed C8 WHT 119 Mode Switch Output C9 DK BLU 1199 Air Temperature Valve Motor Feed C10 BLK 2450 Ground C11 WHT 1038 SeriaData Signal - Class 2 C12 ORN 340 Fused Battery Positive Voltage C13-C15 - - Not Used C16 GRY/BLK 754 Blower Speed Signal - Speed Control D1 DK GRN 734 Inside Air Temperature Sensor Input D2 LT GRN/BLK 735 Outside Ambient Air Temperature Sensor Input D3 RED 708 Mode Valve Position Sensor Signal - Upper D4 - - Not Used D5 GRY 598 5 Volt Reference D6 - - Not Used D7 GRY 8 Instrument Panel Lamp Feed D8 LT BLU 203 A/C Conditioning Refridgerant High Pressure Cut-Out Switch Feed D9 BRN 718 Sensor Return D10 GRY/BLK 1798 Return D11 LT BLU 2820 KDD Clock D12 RED 2819 KDD Data D13 - - Not Used D14 WHT 193 Rear Defogger Relay Control - Coil D15-D16 - - Not Used
Rear Auxiliary HVAC Control- Front Connector Part Information 12084944 16-Way Female Micro-Pack 100 Series (BLK) Pin Wire Color Circuit No. Function A1 - - Not Used A2 GRY 2821 Voltage Reference A3 -A4 - - Not Used A5 BLK 1050 Ground A6 - A7 - - Not Used A8 GRY 8 Instrument Panel Lamp Feed B1 BLK 2930 Feedback Temperature B2 - - Not Used B3 WHT 454 Mode Switch Output B4-B5 - - Not Used B6 BLK/WHT 2933 Ground B7 - - Not Used B8 PPL/WHT 760 Blower Speed Signal- Speed Control
Rear Auxiliary HVAC Controls (Utilities) Connector Part Information 12110088 24-Way F Micro-Pack 100 Series (GRY) Pin Wire Color Circuit No. Function A1 - - Not Used A2 PPL 374 Blower Motor Output- Speed Signal A3 WHT/BLK 1236 Air Temperature Valve Motor Feed A4 WHT 454 Mode Switch Output A5 - - Not Used A6 TAN 517 Air Temperature Sensor Signal - A/C Rear A7 BLK 520 Air Temperature Sensor Signal - Heater Rear A8 BLK 1450 Ground A9 BLK 1050 Ground A10 BLK 808 Sensor Return A11 BLK 2930 Feedback Temperature A12 PPL/WHT 760 Blower Speed Signal - Speed Control B1 BRN 541 Fused Ignition Positive Voltage B2 GRY 8 Instrument Panel Lamp Feed B3 GRY 8 Instrument Panel Lamp Feed B4 DK BLU 1646 Air Temperature Valve Position Sensor Signal B5 YEL/BLK 1814 Mode Valve Position Sensor Signal B6 GRY 598 5 Volt Reference Feed B7 GRY 2821 Voltage Reference B8 LT BLU 2820 KDD Clock B9 LT BLU 2819 KDD Data B10 GRY/BLK 1798 Return B11 BLK/WHT 2933 Ground B12 WHT 454 Mode Switch Output
C-1 Rear Auxiliary A/C Heater Module/Harness Adapter (Utility) Connector Part Information 12064752 6 - Way F Metri-Pack 280 Series (BLK) Connector Part Information 12064754 6 - Way M Metri-Pack 280 Series (BLK) Pin Wire Color Circuit No. Function Pin Wire Color Circuit No. Function A ORN 1740 Fused Battery Positive Voltage A ORN 1740 Fused Battery Positive Voltage B BRN 541 Low Reference B BRN 541 Low Reference C GRY 8 Instrument Panel Lamp Supply Voltage - 1 C GRY 8 Instrument Panel Lamp Supply Voltage - 1 D - - Not Used D - - Not Used E RED 2819 Driver HVAC Control Assembly Signal E RED 2819 Driver HVAC Control Assembly Signal F LT BLU 2820 Driver HVAC Control Assembly Clock Signal F LT BLU LT BLU Driver HVAC Control Assembly Clock Signal
C-2 Rear Auxiliary A/C Heater Module/Harness Adapter (Utility) Connector Part Information 15304692 18 - Way F GT 280 Series (BLK) Connector Part Information 15305201 18 - Way M 280 Series (BLK) Pin Wire Color Circuit No. Function Pin Wire Color Circuit No. Function A1 -A3 - - Not Used A1-A3 - - Not Used A4 GRY/BLK 1798 Return A4 GRY/BLK 1798 Return A5 -A8 - - Not Used A5 -A8 - - Not Used A9 PPL 374 Blower Motor Speed Signal - Output A9 PPL 374 Blower Motor Speed Signal - Output B1 DRK/BLU 1646 Air Temperature Valve Position Sensor Signal - Passenger B1 DRK/BLU 1646 Air Temperature Valve Position Sensor Signal - Passenger B2 WHT/BLK 1236 Air Temperature Valve Motor Feed - Passeger B2 GRY 598 Reference Voltage Feed - 5 Volt B3 YEL/BLK 1814 Mode Valve Position Sensor Signal - Lower B3 YEL/BLK 1814 Mode Valve Position Sensor Signal - Lower B4 - - Not Used B4 - - Not Used B5 BRN 541 Fused Ignition Positive Voltage B5 BRN 541 Fused Ignition Positive Voltage B6 GRY 598 Reference Voltage Feed - 5 Volt B6 GRY 598 Reference Voltage Feed - 5 Volt B7 -B8 - - Not Used B7 -B8 - - Not Used B9 WHT 454 Mode Switch Output B9 WHT 454 Mode Switch Output
Scheme 32
Mode Door Motor Connector Part Information 12064993 6-Way F Micro-Pack 100 Series (BLK) Pin Wire Color Circuit No. Function 5 BRN 341 Fused Ignition Positive Voltage 6 WHT 119 Mode Switch Output 7 BLK 2450 Ground 7 GRY/BLK 1798 Return (Auto A/C) 8 - - Not Used 9 RED 708 Mode Door Position Sensor Signal (Upper) 10 GRY 598 Reference Voltage Feed (5 Volt)
Mode Door Motor - Rear (Suburban) Connector Part Information 12064993 6 Way F Micro-Pack 100 Series (BLK) Pin Wire Color Circuit No. Function 5 BRN 541 Fused Ignition Positive Voltage 6 WHT 454 Mode Switch Output 7 GRY/BLK 1798 Return 8 - - Not Used 9 YEL/BLK 1814 Mode Valve Position Sensor Signal - Rear 10 GRY 598 Reference Voltage Feed (5 Volt)
Recirculation Door Motor Connector Part Information 12064993 6-Way F Micro-Pack 100 Series (BLK) Pin Wire Color Circuit No. Function 5 BRN 341 Fused Ignition Positive Voltage 6 DK GRN 1614 Air Inlet Valve Motor Feed 7 BLK 2450 Ground 7 GRY/BLK 1798 Return (Auto A/C) 8 - - Not Used 9 PPL 1838 Air Inlet Valve Position Sensor (Auto A/C) 10 GRY 598 Reference Voltage Feed - 5 Volt (Auto A/C)
Auxiliary Recirculation Door Motor (Rear HVAC-Manual) Connector Part Information 12064993 6-Way F Micro-Pack 100 Series (BLK) Pin Wire Color Circuit No. Function 5-6 - - Not Used 7 BLK 1450 Ground 8 WHT/BLK 454 Mode Switch Output 9 - - Not Used 10 BRN 541 Fused Ignition Positive Voltage
Temperature Door Motor Connector Part Information 12064993 6-Way F Micro-Pack 100 Series (BLK) Pin Wire Color Circuit No. Function 5 BRN 541 Fused Ignition Positive Voltage 6 DK BLU 1199 Temperature Door Motor (HVAC) Feed 7 BLK 2450 Ground 8 - - Not Used 9 LT BLU 733 Temperature Door Position Sensor Signal 10 GRY 598 Reference Voltage Feed (5 Volt)
Auxiliary Temperature Door Motor (Rear HVAC-Manual ) Connector Part Information 12064993 6-Way F Micro-Pack 100 Series (BLK) Pin Wire Color Circuit No. Function 5-6 - - Not Used 7 BLK 1450 Ground 8 WHT/BLK 1236 Air Temperature Valve Motor Feed-Passenger 9 - - Not Used 10 BRN 541 Fused Ignition Positive Voltage
Temperature Door Motor (Uplevel / Auto A/C)) Connector Part Information 12064993 6-Way F Micro-Pack 100 Series (BLK) Pin Wire Color Circuit No. Function 5 BRN 341 Fused Ignition Positive Voltage 6 WHT 119 Mode Switch Output 6 DK BLU 1119 Air Inlet Valve Motor Feed (Auto A/C) 7 BLK 2450 Ground 7 GRY/BLK 1798 Return (Auto A/C) 8 - - Not Used 9 RED 708 Mode Door Position Sensor Signal (Upper) 9 LT BLU 733 Air Temperature Valve Position Sensor Signal 10 GRY 598 Reference Voltage Feed (5 Volt)
Rear Temperature Door Motor (Suburban) Connector Part Information 12064993 6-Way F Micro-Pack 100 Series (BLK) Pin Wire Color Circuit No. Function 5 BRN 541 Fused Ignition Positive Voltage 6 WHT/BLK 1236 Air Temperature Valve Motor Feed - Rear 7 GRY/BLK 1798 Return 8 - - Not Used 9 DK BLU 1646 Air Temperature Valve Position Sensor Signal - Rear 10 GRY 598 Reference Voltage Feed - 5 Volt