K33 HVAC Control Module X1 Connector End View

WARNING: This page is about a different car, the 2011 Buick Regal. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: K33 HVAC Control Module X1 Connector End View

Courtesy of GENERAL MOTORS CORP.

K33 HVAC Control Module X1

Pin	Color	Circuit	Function
1	-	-	Not Used
2	0.35 GY/L-GN	7565	Windscreen Temp Sensor Signal
3	-	-	Not Used
4	0.35 D-BU/WH	734	Inside Air Temperature Sensor Signal
5	0.5 GY	9283	Humidity Temperature Sensor Signal
6	0.5 BN/RD	597	5 Volt Reference
7	0.35 BN	6102	Low Reference
8-11	-	-	Not Used
12	0.35 GY/D-BU	7564	Humidity Sensor Signal
13	0.35 YE/VT	1783	Twilight Sentinel Delay Signal
14-19	-	-	Not Used
20	0.35 GY	590	Solar Sensor Driver Signal

Connector Part Information

Harness Type: Instrument Panel
OEM Connector: 19153728
Service Connector: 13317839
Description: 20-Way F USCAR 64 Series (GN)

Terminal Part Information

Terminated Lead: Pending
Release Tool: J-38125-215A
Diagnostic Test Probe: J-35616-64B (L-BU)
Terminal/Tray: SAIT-A03T-M064/14
Core/Insulation Crimp: P/P