Serial Data Gateway (SDG) Module X2 (HP2)

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2011 GMC Yukon XL, 2011 GMC Yukon, 2011 Chevrolet Tahoe, 2011 Chevrolet Suburban, and 2011 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	Circuit	Function
1-3	-	-	Not Used
4	0.35 D-BU	919	High Voltage Circuit Impact Detection Signal
5-7	-	-	Not Used
8	0.5 RD/WH	4240	Battery Positive Voltage
9-14	-	-	Not Used
15	0.35 D-BU	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
20	0.35 PK	239	Ignition Voltage

Connector Part Information

Harness Type: Instrument Panel
OEM Connector: 13782500
Service Connector: 13578571
Description: 20-Way F USCAR 0.64 Series (GY)

Terminal Part Information

Terminated Lead: 13575550
Release Tool: J-38125-559
Diagnostic Test Probe: J-35616-16 (L-GN)
Terminal/Tray: 15445905/23
Core/Insulation Crimp: J/J