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HVAC Control Module X1 Connector End View

Fig 1: HVAC Control Module X1 Connector End View
GM1664585Courtesy of GENERAL MOTORS CORP.
HVAC Control Module X1

Pin Wire Circuit Function
1 0.35 L-GN/BK 735 Ambient Air Temperature Sensor Signal
2 0.35 D-GN 734 Inside Air Temperature Sensor Signal
3 0.35 L-BU/BK 590 Solar Sensor Driver Signal (LHD)
0.35 GY 1548 Solar Sensor Passenger Signal (RHD)
4 0.35 GY 1548 Solar Sensor Passenger Signal (LHD)
0.35 L-BU/BK 590 Solar Sensor Driver Signal (RHD)
5 - - Not Used
6 0.35 WH 193 Rear Defogger Relay Control
7 - - Not Used
8 0.35 D-GN 5060 Low Speed GMLAN Serial Data
9 0.35 OG 300 Ignition 3 Voltage
10 0.35 BK/WH 651 Ground
11 0.35 YE 61 Low Reference
12 0.35 PU/WH 5203 Air Quality Sensor Signal (K14)
13-15 - - Not Used
16 0.35 GY/BK 754 Blower Motor Speed Request Signal
17 0.35 D-GN 5060 Low Speed GMLAN Serial Data
18 0.35 RD/WH 540 Battery Positive Voltage
Connector Part Information 
  • Harness Type: Instrument Panel
  • OEM Connector: 7283-4544-30
  • Service Connector: 89047360
  • Description: 18-Way F 0.64 Kaizen Series (BK)
Terminal Part Information 
  • Terminated Lead: 13575845
  • Release Tool: J-38125-215A
  • Diagnostic Test Probe: J-35616-64B (L-BU)
  • Terminal/Tray: SAIT-A03T-M064/14
  • Core/Insulation Crimp: P/P
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