Serial Data Gateway (SDG) Module X1 (HP2)

2006 Chevrolet Suburban K2500, 6.0 USECTION Serial Data Gateway (SDG) Module X1 (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 X1 (HP2) Connector End View
GM2506402Courtesy of GENERAL MOTORS CORP.
Serial Data Gateway (SDG) Module X1 (HP2)

Pin Wire Circuit Function
1 0.5 D-BU 932 APM Wake-Up Signal
2 0.5 TN 968 Wake Up Signal
3-10 - - Not Used
11 0.5 L-BU 6106 PTLAN -
12 0.5 L-BU 6106 PTLAN -
13 0.5 D-BU 6105 PTLAN +
14 0.5 D-BU 6105 PTLAN +
15 0.5 TN 2501 High Speed GMLAN Serial Data Bus -
16 0.5 TN 2501 High Speed GMLAN Serial Data Bus -
17 0.5 TN/BK 2500 High Speed GMLAN Serial Data Bus +
18 0.5 TN/BK 2500 High Speed GMLAN Serial Data Bus +
19 0.35 D-GN 5060 Low Speed GMLAN Serial Data
20 - - Not Used
Connector Part Information
  • Harness Type: Instrument Panel
  • OEM Connector: 13782499
  • Service Connector: 13578570
  • Description: 20-Way F 0.64 Series (BK)
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
RENDER: 1.0x

NO RELATED

Recommended Tools & Savings

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Affiliate disclosure: We may earn a commission at no extra cost to you.

When to See a Mechanic

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

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