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Home >> GMC >> 2021 >> Yukon AT4 >> Repair and Diagnosis >> Electrical >> Wiring Diagrams >> Inline Harness Connector End Views (X270 - X318) >> Inline Harness Connector End Views >> X270 Headliner Harness to Instrument Panel Harness

X270 Headliner Harness to Instrument Panel Harness

GM3277913Courtesy of GENERAL MOTORS COMPANY
GM3277901Courtesy of GENERAL MOTORS COMPANY
Connector Part Information
  • Harness Type: Headliner
  • OEM Connector: 13889713
  • Service Connector: 19329739
  • Description: 48-Way F 1.2 MCON, 2.8 MCP Series (BK)
Connector Part Information
  • Harness Type: Instrument Panel
  • OEM Connector: 15512031
  • Service Connector: 19329740
  • Description: 48-Way M 1.2 MCON, 2.8 MCP Series (BK)
Terminal Part Information

Terminal Type ID Terminated Lead Diagnostic Test Probe Terminal Removal Tool
I 13575435 J-35616-4A (PU) J-38125-557
II 19329758 J-35616-12 (BU) J-38125-215A
III 13575574 J-35616-5 (PU) J-38125-215A
IV 19329749 J-35616-13 (BU) J-38125-215A
Pin Size Color Circuit Terminal Type ID Option Function Pin Size Color Circuit Terminal Type ID Option
1 2.5 RD/BU 4540 I - Battery Positive Voltage 1 2.5 RD/BU 4540 III -
2 0.35 BU/YE 4979 I - AUTOSAR CAN Bus [+] 2 Serial Data 2 0.35 BU/YE 4979 III -
3 0.35 WH 4978 I - AUTOSAR CAN Bus [-] 2 Serial Data 3 0.35 WH 4978 III -
4 0.5 GN/BK 3008 II - Active Noise Cancellation Microphone 1 Feedback Signal 4 0.5 GN/BK 3008 IV -
5 0.5 GN/BN 3005 II - Active Noise Cancellation Microphone 1 Signal 5 0.5 GN/BN 3005 IV -
6 0.35 BU/GY 4105 II - AUTOSAR CAN Bus [+] 8 Serial Data 6 0.35 BU/GY 4105 IV -
7 0.35 WH/GY 4104 II - AUTOSAR CAN Bus [-] 8 Serial Data 7 0.35 WH/GY 4104 IV -
8 0.35 BU/VT 8900 II 5W4/9C1 Police Microphone Input Signal 8 0.5 BU/VT 8900 IV 5W4/9C1
9 0.35 YE/VT 2516 II - Telematics Switch Green LED Indicator Control 9 0.35 YE/VT 2516 IV -
10 0.35 GN/WH 2514 II - Telematics Switch Signal 10 0.35 GN/WH 2514 IV -
11 0.35 GN/BK 2515 II - Telematics Switch Supply Voltage 11 0.35 GN/BK 2515 IV -
12 0.35 BN/WH 2517 II - Telematics Switch Red LED Indicator Control 12 0.35 BN/WH 2517 IV -
13 0.5 RD/YE 240 I - Battery Positive Voltage 13 1 RD/YE 240 III -
14 0.35 BU/GY 4105 I - AUTOSAR CAN Bus [+] 8 Serial Data 14 0.35 BU/GY 4105 III -
15 0.35 WH/GY 4104 I - AUTOSAR CAN Bus [-] 8 Serial Data 15 0.35 WH/GY 4104 III -
16 - 17 - - - - - Not Occupied 16 - 17 - - - - -
18 0.35 GN/WH 2854 II - Body Control Module LIN Bus 8 18 0.35 GN/WH 2854 IV -
19 0.35 WH 4978 II - AUTOSAR CAN Bus [-] 2 Serial Data 19 0.5 WH 4978 IV -
20 0.35 BU/YE 4979 II - AUTOSAR CAN Bus [+] 2 Serial Data 20 0.5 BU/YE 4979 IV -
21 0.5 BU 655 II - Cellular Telephone Microphone Signal 21 0.35 BU 655 IV -
22 0.5 BK/BN 654 II - Cellular Telephone Microphone Low Reference 22 0.35 BK/BN 654 IV -
23 0.35 GN/WH 24 II - Backup Lamp Control 23 0.5 GN/WH 24 IV -
24 - - - - - Not Occupied 24 - - - - -
25 0.5 BK 1850 I - Ground 25 0.5 BK 1050 III -
26 0.5 VT/WH 239 I - Run/Crank Ignition 1 Voltage 26 0.5 VT/WH 239 III -
27 - 29 - - - - - Not Occupied 27 - 29 - - - - -
30 0.5 VT/YE 7043 II - Microphone [+] Signal 30 0.35 VT/YE 7043 IV -
31 0.35 BK/WH 1851 II - Signal Ground 31 0.35 BK/WH 1851 IV -
32 0.35 BK/YE 1691 II - Automatic Day/Night Mirror Low Reference 32 0.35 BK/YE 1691 IV -
33 0.35 YE/WH 1690 II - Mirror Dimming Signal 33 0.35 YE/WH 1690 IV -
34 0.35 BU/WH 8899 II - Police Microphone Data Signal 34 0.5 BU/WH 8899 IV -
35 - 36 - - - - - Not Occupied 35 - 36 - - - - -
37 2.5 BK 1050 I - Ground 37 2.5 BK 1050 III -
38 0.5 GN/WH 4115 I - Body Control Module LIN Bus 5 38 0.35 GN/WH 4115 III -
39 - 41 - - - - - Not Occupied 39 - 41 - - - - -
42 0.5 BU/BK 7044 II - Microphone [-] 42 0.35 BU/BK 7044 IV -
43 - 48 - - - - - Not Occupied 43 - 48 - - - - -