2005 Pontiac Aztek Base, AWDFACTORY OEM SERVICE PROCEDURE

HVAC Control Module Connector End View

HVAC Control Module Connector End View

GM130690Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 12110206
  • 24-Way F Micro-Pack 100 Series (L-BU)
Pin Wire Color Circuit No. Function
A1 BK 552 Low Reference
A2 - - Not Used
A3 WH 2622 Evaporator Temperature Sensor Signal
A4 L-BU/BK 590 Sunload Sensor Signal
A5-A6 - - Not Used
A7 GY/BK 754 Blower Motor Speed Control
A8 OG 761 Blower Motor Speed Signal
A9 - - Not Used
A10 BK 150 Ground
A11 BN 241 Ignition 3 Voltage
A12 OG 640 Battery Positive Voltage
B1 D-BU 1646 Right Air Temperature Door Position Signal
B2 L-BU 733 Left Air Temperature Door Position Signal
B3 YE/BK 713 Mode Door Position Signal
B4 GY 598 5-Volt Reference
B5 WH/BK 1236 Right Air Temperature Door Control
B6 D-BU 1199 Left Air Temperature Door Control
B7 TN 2273 Mode Door Control
B8 TN/BK 2274 Recirculation Door Control
B9 WH 1038 Class 2 Serial Data
B10 - - Not Used
B11 WH 193 Rear Defog Relay Control
B12 GY 8 Instrument Panel Lamp Supply Voltage
Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.