Serial Data Gateway (SDG) Module X2 (HP2)

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2008 GMC Yukon XL, 2008 GMC Yukon, 2008 Chevrolet Tahoe, 2008 Chevrolet Suburban, and 2008 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Serial Data Gateway (SDG) Module X2 (HP2) Connector End View

Courtesy of GENERAL MOTORS CORP.

Pin	Wire Color	Circuit	Function
1-3	-	-	Not Used
4	0.35 D-BU	919	Auxiliary Front Mode Signal
5-7	-	-	Not Used
8	0.5 RD/WH	4240	Battery Positive Voltage
9-14	-	-	Not Used
15	0.35 D-BU/WH	918	Low Reference
16	0.35 L-BU	5986	Serial Data Communication Enable
17	-	-	Not Used
18	0.5 BK	1050	Ground
19	0.35 D-BU	5985	Serial Data Wake-Up Signal
19	0.35 D-BU	5985	Serial Data Wake-Up Signal
20	0.35 PK	239	Ignition Voltage

Connector Part Information

OEM: 15491304
Service: See Catalog
Description: 20-Way F USCAR 0.64 Series (GY)

Terminal Part Information

Terminal/Tray: 7116-4618-02/14
Core/Insulation Crimp: P/P
Release Tool/Test Probe: J-38125-215A/J-35616-64B (L-BU)