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HOMESERVICE MANUALSCHEVROLET2008CHEVY EXPRESS G3500, VAN PASSENGER EXTENDEDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 894 (WIRING SYSTEMS AND POWER MANAGEMENT - COMPONENT CONNECTOR END VIEWS - MEMORY SEAT MODULE (X5) TO YAW SENSOR)COMPONENT CONNECTOR END VIEWSSERIAL DATA GATEWAY (SDG) MODULE X2 (HP2)
2008 Chevrolet Chevy Express G3500, Van Passenger Extended

Serial Data Gateway (SDG) Module X2 (HP2)

2008 Chevrolet Chevy Express G3500, Van Passenger ExtendedSECTION Serial Data Gateway (SDG) Module X2 (HP2)
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.
GM2498539Courtesy of
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
Serial Data Gateway (SDG) Module X2 (HP2)

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
RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.