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HOMESERVICE MANUALSCHEVROLET2006CHEVY EXPRESS G2500, VAN CARGO, 6.6 2REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 2257 (WIRING SYSTEMS AND POWER MANAGEMENT - COMPONENT CONNECTOR END VIEWS PART 4)SERIAL DATA GATEWAY (SDG) MODULE X2 (HP2)
2006 Chevrolet Chevy Express G2500, Van Cargo, 6.6 2

Serial Data Gateway (SDG) Module X2 (HP2)

2006 Chevrolet Chevy Express G2500, Van Cargo, 6.6 2SECTION Serial Data Gateway (SDG) Module X2 (HP2)
WARNING: This page is about a different car, the 2009 GMC Sierra, 2009 GMC Cab & Chassis Sierra, 2009 Chevrolet Silverado, and 2009 Chevrolet Cab & Chassis Silverado. 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
GM1715228Courtesy of GENERAL MOTORS CORP.
Serial Data Gateway (SDG) Module X2 (HP2)

Pin Wire 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
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: SAITS-A03T-M064/14
  • Core/Insulation Crimp: P/P
  • Release Tool/Test Probe: J-38125-215A/J-35616-64B (L-BU)
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.