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HOMESERVICE MANUALSCHEVROLET2003TRAILBLAZER 4.2 S, 4WDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1115 (WIRING SYSTEMS - CONNECTOR END VIEWS)CONNECTOR END VIEWSINLINE HARNESS CONNECTOR END VIEWSC308
2003 Chevrolet TrailBlazer 4.2 S, 4WD

Inline Harness Connector End Views: C308

2003 Chevrolet TrailBlazer 4.2 S, 4WDSECTION C308
WARNING: This page is about a different car, the 2004 Pontiac Aztek and 2004 Buick Rendezvous. However, it is still accessible from the selected car via links, so may be relevant.
C308 (Pontiac)

GM655763Courtesy of GENERAL MOTORS CORP.
GM655824Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 15304908
  • 30-Way F GT 150, 280 Series (BLK)
 Connector Part Information
  • 15326762
  • 30-Way M GT 150, 280 Series (BLK)
Pin Wire Color Circuit No. Function Pin Wire Color Circuit No. Function
A1-A2 - - Not Used A1-A2 - - Not Used
A3 BARE 814 Drain Wire (U32) A3 BARE 814 Drain Wire (U32)
A4 ORN 4240 Battery Positive Voltage (U32) A4 ORN 4240 Battery Positive Voltage (U32)
A5 BLK/WHT 351 Ground (U32) A5 BLK/WHT 351 Ground (U32)
A6 PNK 1045 Ignition 3 Voltage (U32) A6 PNK 1045 Ignition 3 Voltage (U32)
A7 BLK/WHT 367 Remote Radio Left Audio Signal (U32) A7 BLK/WHT 367 Remote Radio Left Audio Signal (U32)
A8 DK GRN/WHT 368 Remote Radio Right Audio Signal (U32) A8 DK GRN/WHT 368 Remote Radio Right Audio Signal (U32)
A9 DK GRN 1927 Rear Defog Element Supply Voltage A9 DK GRN 1927 Rear Defog Element Supply Voltage
A10 - - Not Used A10 - - Not Used
A11 WHT 17 Stop Lamp Switch Signal A11 WHT 17 Stop Lamp Switch Signal
A12 BARE 1705 Drain Wire (UE1) A12 BARE 1705 Drain Wire (UE1)
A13 GRY 655 Cellular Microphone Signal (UE1) A13 GRY 655 Cellular Microphone Signal (UE1)
A14 DK GRN/WHT 2514 Keypad Signal (UE1) A14 DK GRN/WHT 2514 Keypad Signal (UE1)
A15 LT GRN/BLK 2515 Keypad Supply Voltage (UE1) A15 LT GRN/BLK 2515 Keypad Supply Voltage (UE1)
B1-B2 - - Not Used B1-B2 - - Not Used
B3 BLK/WHT 372 Remote Radio Audio Output (-) (U32) B3 BLK/WHT 372 Remote Radio Audio Output (-) (U32)
B4 ORN 1732 Courtesy Lamps Supply Voltage B4 ORN 1732 Courtesy Lamps Supply Voltage
B5 - - Not Used B5 - - Not Used
B6 GRY/BLK 690 Courtesy Lamp Low Control B6 GRY/BLK 690 Courtesy Lamp Low Control
B7 LT BLU 115 Right Rear Speaker Output (-) (w/o UQ3) B7-B8 - - Not Used
B8 - - Not Used
B9 YEL 643 Accessory Voltage (CF5) B9 YEL 643 Accessory Voltage (CF5)
B10 YEL 116 Left Rear Speaker Output (-) (w/o UQ3) B10 YEL 116 Left Rear Speaker Output (-) (w/o UQ3)
B11 BRN 199 Left Rear Speaker Output (+) (w/o UQ3) B11 BRN 199 Left Rear Speaker Output (+) (w/o UQ3)
B12 YEL/BLK 2516 Keypad Green LED Signal (UE1) B12 YEL/BLK 2516 Keypad Green LED Signal (UE1)
B13 ORN/BLK 2518 Keypad Low Reference (UE1) B13 ORN/BLK 2518 Keypad Low Reference (UE1)
B14 BRN/WHT 2517 Keypad Red LED Signal (UE1) B14 BRN/WHT 2517 Keypad Red LED Signal (UE1)
B15 - - Not Used B15 - - Not Used
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.