Junction Block - Right I/P X4

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2012 GMC Yukon XL, 2012 GMC Yukon, 2012 Chevrolet Tahoe, 2012 Chevrolet Suburban, and 2012 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Junction Block - Right I/P X4 Connector End View

Courtesy of GENERAL MOTORS COMPANY

Pin	Wire	Circuit	Function
A1	0.35 L-BU/BK	598	5-Volt Reference
A1	0.35 L-BU/BK	598	5-Volt Reference
A2	0.35 GY/BK	520	Lower Right Air Temperature Sensor Signal (CJ2)
A2	0.35 TN	552	Signal Return (CJ3)
A3	0.35 WH/BK	518	Lower Left Air Temperature Sensor Signal (CJ2)
A4	0.35 YE	1791	Low Reference
A4	0.35 YE	1791	Low Reference
A5	0.5 PU	1838	Recirculation Door Position Signal (CJ2)
A6	0.35 PU/WH	754	Blower Motor Speed Control
A7	-	-	Not Used
B1	0.35 L-BU/BK	598	5-Volt Reference
B1	0.35 L-BU/BK	598	5-Volt Reference (CJ2)
B2	0.35 D-BU	1199	Left Air Temperature Door Control (CJ2)
B3	0.35 TN	2273	Mode Door Control
B4	0.35 YE	1791	Low Reference
B4	0.35 YE	1791	Low Reference (CJ2)
B5	0.35 L-GN	713	Mode Door Position Signal
B6	0.35 L-BU	733	Left Air Temperature Door Position Signal (CJ2)
B7	0.35 WH	2622	Evaporator Temperature Sensor Signal

Connector Part Information

Harness Type: HVAC
OEM Connector: 15467620
Service Connector: 19115662
Description: 14-Way F GT 150 280 Series (BK)

Terminal Part Information

Pins: A1, A4, B1, B4
Terminated Lead: 13575753
Release Tool: J-38125-553
Diagnostic Test Probe: J-35616-4A (PU)
Terminal/Tray: 15304711/8
Core/Insulation Crimp: 2/A

Pins: A2, A3, A5, A6, B2, B3, B5, B6
Terminated Lead: 13575735
Release Tool: J-38125-553
Diagnostic Test Probe: J-35616-2A (GY)
Terminal/Tray: 12191812/19
Core/Insulation Crimp: E/C