K56 Serial Data Gateway Module X3

2025 Chevrolet Equinox RS, FWDSECTION K56 Serial Data Gateway Module X3
GM4900333Courtesy of GENERAL MOTORS COMPANY
Connector Part Information
  • Harness Type: Instrument Panel Wiring Harness
  • OEM Connector: 13519319
  • Service Connector: 13519319
  • Description: 30-Way F 0.5 MQS Series (BK with D-GY 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
II Service by Cable EL-35616-58 (BK) EL-38125-58
Pin Size Color Circuit Function Terminal Type ID Option
1 0.35 BU / GN 4103 AUTOSAR CAN Bus [+] 9 Serial Data I -
2 0.35 WH / GN 4102 AUTOSAR CAN Bus [-] 9 Serial Data I -
3 - 4 - - - Not Occupied - -
5 0.35 BU / YE 4979 AUTOSAR CAN Bus [+] 2 Serial Data I -
6 0.35 WH 4978 AUTOSAR CAN Bus [-] 2 Serial Data I -
7 0.35 BU 4758 Ethernet Bus 2 [+] II  
8 0.35 WH 4757 Ethernet Bus 2 [-] II  
9 - 30 - - - Not Occupied - -
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:

  • 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.