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HOMESERVICE MANUALSGMC2020ACADIA SLREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 439 (COMPONENT CONNECTOR END VIEWS (K43-K160))COMPONENT CONNECTOR END VIEWSK56 SERIAL DATA GATEWAY MODULE X2
2020 GMC Acadia SL

K56 Serial Data Gateway Module X2

2020 GMC Acadia SLSECTION K56 Serial Data Gateway Module X2
WARNING: This page is about a different car, the 2023 GMC Acadia. However, it is still accessible from the selected car via links, so may be relevant.
GM4897967Courtesy of GENERAL MOTORS COMPANY
Connector Part Information
  • Harness Type: Instrument Panel Wiring Harness
  • OEM Connector: 13519320
  • Service Connector: 13519320
  • Description: 30-Way F 0.5 MQS Series (BK with BU Front Housing)
Terminal Part Information

Terminal Type ID Terminated Lead Diagnostic Test Probe Terminal Removal Tool
I 19370262 EL-35616-58 (BK) EL-38125-58
Pin Size Color Circuit Function Terminal Type ID Option
1 0.35 BU/VT 3813 High Speed GMLAN Serial Data [+] 4 I UGN
2 0.35 BU/VT 3813 High Speed GMLAN Serial Data [+] 4 I UGN
3 0.35 WH 3811 High Speed GMLAN Serial Data [-] 4 I UGN
4 0.35 BU 2500 High Speed GMLAN Serial Data [+] 1 I -
5 0.35 WH 2501 High Speed GMLAN Serial Data [-] 1 I -
6 0.35 BU/GY 3935 High Speed GMLAN Serial Data [+] 8 I -
7 0.35 WH/GY 3936 High Speed GMLAN Serial Data [-] 8 I -
8 0.35 BU/YE 6105 High Speed GMLAN Serial Data [+] 2 I -
9 0.35 WH 6106 High Speed GMLAN Serial Data [-] 2 I -
10 0.35 WH/GY 3936 High Speed GMLAN Serial Data [-] 8 I -
11 - - - Not Occupied - -
12 0.35 WH 3811 High Speed GMLAN Serial Data [-] 4 I UGN
13 - - - Not Occupied - -
14 0.35 BU 2500 High Speed GMLAN Serial Data [+] 1 I -
15 0.35 WH 2501 High Speed GMLAN Serial Data [-] 1 I -
16 0.35 BU/GY 3935 High Speed GMLAN Serial Data [+] 8 I -
17 0.35 WH/GY 3936 High Speed GMLAN Serial Data [-] 8 I -
18 0.35 BU/YE 6105 High Speed GMLAN Serial Data [+] 2 I -
19 0.35 WH 6106 High Speed GMLAN Serial Data [-] 2 I -
20 0.35 BU/GY 3935 High Speed GMLAN Serial Data [+] 8 I -
21 - 22 - - - Not Occupied - -
23 0.35 VT/GY 1039 Run/Crank Ignition 1 Voltage I  
24 - - - Not Occupied - -
25 0.35 WH/BU 5986 Serial Data Communication Enable I -
26 - 30 - - - Not Occupied - -
RENDER: 1.0x

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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.