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HOMESERVICE MANUALSCHEVROLET2025TAHOE COMMERCIAL, 4WDREPAIR AND DIAGNOSIS (SINGLE PAGE)QUICK LOOKUPSWIRING DIAGRAMSCOMPONENT CONNECTOR END VIEWS (K20-K43)COMPONENT CONNECTOR END VIEWSK36 RESTRAINTS CONTROL MODULE X1
2025 Chevrolet Tahoe Commercial, 4WD

K36 Restraints Control Module X1

2025 Chevrolet Tahoe Commercial, 4WDSECTION K36 Restraints Control Module X1
GM1590948Courtesy of GENERAL MOTORS COMPANY
Connector Part Information
  • Harness Type: Body Wiring Harness
  • OEM Connector: 12728284
  • Service Connector: 85090371
  • Description: 56-Way F 0.64 Series, Sealed (BK with BU Terminal Position Assurance)
Terminal Part Information

Terminal Type ID Terminated Lead Diagnostic Test Probe Terminal Removal Tool
I 19354746 J-35616-64B (L-BU) J-38125-213
Pin Size Color Circuit Function Terminal Type ID Option
1 - 6 - - - Not Occupied - -
7 0.5 BK / OG 5045 Left Front Impact Discriminating Sensor Low Reference I -
8 0.5 OG / YE 354 Left Front Impact Discriminating Sensor Signal I -
9 0.5 OG / GN 1409 Right Front Impact Discriminating Sensor Signal I -
10 0.5 BK / OG 5600 Right Front Impact Discriminating Sensor Low Reference I -
11 0.5 WH / OG 3476 Passenger Seat Belt Retractor Pretensioner Low Control I -
12 0.5 OG / GN 3475 Passenger Seat Belt Retractor Pretensioner High Control I -
13 0.5 YE / OG 3025 Passenger Instrument Panel Air Bag Stage 1 High Control I -
14 0.5 OG / WH 3024 Passenger Instrument Panel Air Bag Stage 1 Low Control I -
15 - 24 - - - Not Occupied - -
25 0.5 VT / OG 3478 Driver Seat Belt Retractor Pretensioner Low Control I -
26 0.5 OG / WH 3477 Driver Seat Belt Retractor Pretensioner High Control I -
27 0.5 OG / VT 3021 Steering Wheel Air Bag Stage 1 High Control I -
28 0.5 BN / OG 3020 Steering Wheel Air Bag Stage 1 Low Control I -
29 0.35 BU / GN 4103 AUTOSAR CAN Bus [+] 9 Serial Data I -
30 0.35 WH / GN 4102 AUTOSAR CAN Bus [-] 9 Serial Data I -
31 - - - Not Occupied - -
32 0.5 OG / BN 3479 Passenger Seat Belt Anchor Pretensioner High Control I -
33 0.5 GY / OG 3480 Passenger Seat Belt Anchor Pretensioner Low Control I -
34 - 37 - - - Not Occupied - -
38 0.5 OG / VT 3026 Passenger Instrument Panel Air Bag Stage 2 Low Control I -
39 0.5 GY / OG 3027 Passenger Instrument Panel Air Bag Stage 2 High Control I -
40 - 41 - - - Not Occupied - -
42 0.75 BK / WH 1351 Signal Ground I -
43 0.35 BU / GN 4103 AUTOSAR CAN Bus [+] 9 Serial Data I -
44 0.35 WH / GN 4102 AUTOSAR CAN Bus [-] 9 Serial Data I -
45 - - - Not Occupied - -
46 0.5 VT / OG 3482 Driver Seat Belt Anchor Pretensioner Low Control I -
47 0.5 OG / YE 3481 Driver Seat Belt Anchor Pretensioner High Control I -
48 - 49 - - - Not Occupied - -
50 0.5 BN / WH 3895 Roof Rail Air Bag Disable Switch Low Reference I -
51 0.5 BU / WH 3119 Roof Rail Air Bag Disable Switch Signal I -
52 - - - Not Occupied - -
53 0.5 WH / OG 3022 Steering Wheel Air Bag Stage 2 Low Control I -
54 0.5 OG / GN 3023 Steering Wheel Air Bag Stage 2 High Control I -
55 0.5 VT / WH 239 Run/Crank Ignition 1 Voltage I -
56 0.5 RD / GN 4440 Battery Positive Voltage I -
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.