Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
SYS.OK|MANUAL.DBβ LIVE
HOMESERVICE MANUALSCHEVROLET2003TRAILBLAZER 4.2 S, 4WDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 951 (LIGHTING SYSTEMS)COMPONENT LOCATORLIGHTING SYSTEMS CONNECTORS
2003 Chevrolet TrailBlazer 4.2 S, 4WD
Lighting Systems Connectors
2003 Chevrolet TrailBlazer 4.2 S, 4WDSECTION Lighting Systems Connectors
WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
Ambient Light Sensor (CJ3)
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A | WHT | 278 | Ambient Light Sensor Signal |
| B | BLK | 279 | Ambient Light Sensor Low Reference |
Backup Alarm (8S3)
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A | LT GRN | 1624 | Trailer Backup Lamp Supply Voltage |
| B | BLK | 1650 | Ground |
Backup Lamp - Left (Chevy)
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A | LT GRN | 24 | Backup Lamp Supply Voltage |
| B | - | - | Not Available |
| G | BLK | 1750 | Ground |
| BLK | 1750 | Ground | |
Backup Lamp - Left (GMC)
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A | LT GRN | 24 | Backup Lamp Supply Voltage |
| B | - | - | Not Available |
| G | BLK | 1750 | Ground |
Backup Lamp - Right (Chevy)
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A | LT GRN | 24 | Backup Lamp Supply Voltage |
| B | - | - | Not Available |
| G | BLK | 1750 | Ground |
| BLK | 1750 | Ground | |
Backup Lamp - Right (GMC)
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A | LT GRN | 24 | Backup Lamp Supply Voltage |
| B | - | - | Not Available |
| G | BLK | 1750 | Ground |
Backup Lamp - Switch (Manual Trans)
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A | PNK | 839 | Ignition 1 Voltage |
| B | GRY | 1524 | Backup Lamp Supply Voltage |
Cargo Lamp/Center High Mounted Stop Lamp (CHMSL)
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A | ORN | 1732 | Inadvertent Power Supply Voltage |
| B | DK BLU/WHT | 149 | Cargo Lamp Low Control |
| C | LT BLU | 1620 | Trailer CHMSL Supply Voltage |
| D | BLK | 1050 | Ground |
Clearance Lamp - LF (NYS or E63)
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A | BRN | 2509 | Left Rear Park Lamps Supply Voltage |
| B | BLK | 1750 | Ground |
Clearance Lamp - LR (NYS or E63)
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A | BRN | 2509 | Left Rear Park Lamps Supply Voltage |
| B | BLK | 1750 | Ground |
Clearance Lamp - RF (NYS or E63)
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A | BRN/WHT | 2609 | Right Rear Park Lamps Supply Voltage |
| B | BLK | 1750 | Ground |
Clearance Lamp - RR (NYS or E63)
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A | BRN/WHT | 2609 | Right Rear Park Lamps Supply Voltage |
| B | BLK | 1750 | Ground |
Clearance Lamps - Roof (U01)
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A | BRN | 2409 | Interior Park Lamps Supply Voltage |
| B | BLK | 1050 | Ground |
Courtesy/Reading Lamp - Rear (Crew Cab w/YE9)
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A | GRY/BLK | 690 | Courtesy Lamp Supply Voltage |
| B | BLK | 1050 | Ground |
| C | ORN | 1732 | Inadvertent Power Supply Voltage |
Daytime Running Lamp (DRL) - Left (Domestic)
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A | DK BLU | 545 | DRL Supply Voltage |
| G | BLK | 150 | Ground |
Daytime Running Lamp (DRL) - Left (Export)
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A | DK BLU | 545 | DRL Supply Voltage |
| B | BRN | 2309 | Front Park Lamps Supply Voltage |
| G | BLK | 150 | Ground |
Daytime Running Lamp (DRL) - Right (Domestic)
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A | DK BLU | 545 | DRL Supply Voltage |
| G | BLK | 150 | Ground |
Daytime Running Lamp (DRL) - Right (Export)
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A | DK BLU | 545 | DRL Supply Voltage |
| B | BRN | 2309 | Front Park Lamps Supply Voltage |
| G | BLK | 150 | Ground |
Dome Lamp - Rear (Except Crew Cab w/YE9)
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A | GRY/BLK | 690 | Courtesy Lamps Supply Voltage |
| B | BLK | 1050 | Ground |
| C | - | - | Not Used |
Door Courtesy Lamp - Front Passenger (YE9)
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A | WHT | 156 | Courtesy Lamp Low Control |
| B | LT BLU | 661 | Right Door Courtesy Lamp Ground |
Door Courtesy Lamp - LF (YE9)
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A | DK BLU/WHT | 149 | Left Door Courtesy Lamp Supply Voltage |
| B | LT BLU | 660 | Left Door Courtesy Lamp Ground |
Door Latch Assembly (Door Jamb Switch) - Driver - C2
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A | - | - | Not Available |
| B | GRY/BLK | 745 | Left Front Door Ajar Switch Signal |
| C | - | - | Not Available |
| D | BLK | 1050 | Ground (w/o YE9) |
| BRN | 1183 | Left Front Door Switch Low Reference (YE9) | |
Door Latch Assembly (Door Jamb Switch) - Front Passenger - C2
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A | DK GRN | 1178 | Right Front Door Switch Low Reference (w/YE9) |
| BLK | 1050 | Ground (w/o YE9) | |
| B | - | - | Not Available |
| C | BLK/WHT | 746 | Right Front Door Ajar Switch Signal |
| D | - | - | Not Available |
Door Latch Assembly (Door Jamb Switch) - LR - C2 (Crew Cab Only)
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A | - | - | Not Available |
| B | LT BLU/BLK | 747 | Left Rear Door Ajar Switch Signal |
| C | - | - | Not Available |
| D | BLK | 1150 | Ground |
Door Latch Assembly (Door Jamb Switch) - RR - C2 (Crew Cab Only)
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A | - | - | Not Available |
| B | LT GRN/BLK | 748 | Right Rear Door Ajar Switch Signal |
| C | - | - | Not Available |
| D | BLK | 1250 | Ground |
Fog Lamp - LF
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A | PPL | 34 | Fog Lamps Supply Voltage |
| B | BLK | 150 | Ground |
Fog Lamp - LR (T79)
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A | PPL | 122 | Off Road Lamps Supply Voltage |
| B | - | - | Not Used |
| G | BLK | 2250 | Ground |
Fog Lamp - RF
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A | PPL | 34 | Fog Lamps Supply Voltage |
| B | BLK | 150 | Ground |
Fog Lamp - RR (T79)
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A | PPL | 122 | Off Road Lamps Supply Voltage |
| B | - | - | Not Used |
| G | BLK | 2250 | Ground |
Fog Lamp Switch Rear (T79)
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A | - | - | Not Used |
| B | YEL | 1977 | Rear Fog Lamp Relay and Indicator Control |
| C | LT BLU | 187 | Rear Fog Lamp Switch Signal |
| D | BLK/WHT | 1851 | Ground |
| E | PPL/WHT | 1382 | LED Dimming Supply |
| F | BRN/WHT | 230 | Instrument Panel Lamps Dimming Control |
Headlamp - High Beam - Left (Domestic)
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A | DK GRN/WHT | 711 | Left Headlamp High Beam Supply Voltage |
| B | BLK | 550 | Ground |
Headlamp - High Beam - Left (Export)
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A | DK GRN/WHT | 711 | Left Headlamp High Beam Supply Voltage |
| B | BLK | 550 | Ground |
Headlamp - High Beam - Right (Domestic)
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A | LT GRN/BLK | 311 | Right Headlamp High Beam Supply Voltage |
| B | BLK | 150 | Ground |
Headlamp - High Beam - Right (Export)
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A | LT GRN/BLK | 311 | Right Headlamp High Beam Supply Voltage |
| B | BLK | 150 | Ground |
Headlamp - Low Beam - Left
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A | YEL | 712 | Left Headlamp Low Beam Supply Voltage |
| B | BLK | 550 | Ground |
Headlamp - Low Beam - Right
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A | TAN/WHT | 312 | Right Headlamp Low Beam Supply Voltage |
| B | BLK | 150 | Ground |
Headlamp Leveling Actuator - Left (Export)
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| 1 | BLK | 150 | Ground |
| 2 | DK GRN | 189 | Headlamp Leveling Motor Supply Voltage |
| 3 | PNK | 639 | Ignition 1 Voltage |
Headlamp Leveling Actuator - Right (Export)
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| 1 | BLK | 150 | Ground |
| 2 | DK GRN | 189 | Headlamp Leveling Motor Supply Voltage |
| 3 | PNK | 639 | Ignition 1 Voltage |
Headlamp Leveling Switch (Export)
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A | PNK | 639 | Ignition 1 Voltage |
| B | DK GRN | 189 | Headlamp Leveling Motor Supply Voltage |
| C | BLK | 150 | Ground |
| D | BRN/WHT | 230 | Instrument Panel Lamps Dimming Control |
| E-H | - | - | Not Used |
Headlamp Switch
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| 1 | PPL | 328 | Interior Lamp Defeat Switch Signal |
| 2 | GRY/BLK | 308 | Park Lamp Switch On Signal |
| 3 | BLK/WHT | 1851 | Ground |
| 4 | WHT | 103 | Headlamp Switch Headlamps On Signal |
| 5 | DK GRN | 588 | DRL Switch Signal |
| 6 | BLK | 1050 | Ground |
| 7 | PNK | 1348 | Headlamp ON Indicator Control |
| 8 | PPL | 359 | DRL OFF Indicator Control |
| 9 | PPL/WHT | 1382 | LED Dimming Supply |
| 10 | DK BLU/WHT | 1495 | Courtesy Lamp ON Signal |
| 11 | ORN/BLK | 2090 | Dimming Input |
| 12 | GRY/BLK | 2226 | Dimming Return |
| 13 | GRY | 1056 | 5-Volt Reference |
| 14 | BRN/WHT | 230 | Instrument Panel Lamps Dimming Control |
Junction Block - Rear Lamps - C1
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A | LT BLU | 2114 | Left Turn Signal Lamps Supply Voltage |
| B | LT BLU | 1320 | CHMSL Supply Voltage |
| C | LT GRN | 24 | Backup Lamp Supply Voltage |
| D | BRN/WHT | 2609 | Right Rear Park Lamps Supply Voltage |
| E | BLK | 1550 | Ground (30 Series Except Chassis Cab) |
| 1650 | Ground (30 Series Chassis Cab) | ||
| 1750 | 10/20 Series | ||
| F | - | - | Not Used |
| G | BRN | 2509 | Left Rear Park Lamps Supply Voltage |
| H | DK BLU | 2115 | Right Turn Signal Lamps Supply Voltage |
Junction Block - Rear Lamps - C2
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A | BLK | 1750 | Ground |
| B | BLK | 1750 | Ground (Z88) |
| C | BLK | 1750 | Ground (Z88) |
| D | LT BLU | 1320 | CHMSL Supply Voltage |
| E | BRN | 2509 | Left Rear Park Lamps Supply Voltage |
| F | DK GRN | 24 | Backup Lamp Supply Voltage |
| G | - | - | Unavailable |
| H | LT BLU | 2114 | Left Turn Signal Lamps Supply Voltage |
Junction Block - Rear Lamps - C3
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A | BRN/WHT | 2609 | Right Rear Park Lamps Supply Voltage |
| B | - | - | Not Used |
| C | BLK | 1750 | Ground |
| D | BLK | 1750 | Ground |
| E | BLK | 1750 | Ground |
| F | - | - | Not Used |
| G | BRN | 2509 | Left Rear Park Lamps Supply Voltage |
| H | BLK | 1750 | Ground |
Junction Block - Rear Lamps - C4
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A | LT BLU | 1320 | CHMSL Supply Voltage |
| B | BRN | 2609 | Right Rear Park Lamps Supply Voltage |
| C | BLK | 1750 | Ground |
| D | BLK | 1750 | Ground (Z88) |
| E | DK GRN | 24 | Backup Lamp Supply Voltage |
| F | DK BLU | 2115 | Right Turn Signal Lamps Supply Voltage |
| G | - | - | Unavailable |
| H | BLK | 1750 | Ground (Z88) |
License Lamp - Left
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A | BRN | 2509 | Left Rear Park Lamps Supply Voltage |
| B | BLK | 1750 | Ground |
License Lamp - Right
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A | BRN/WHT | 2609 | Right Rear Park Lamps Supply Voltage (w/o NYS) |
| 2509 | Left Rear Park Lamps Supply Voltage (w/NYS) | ||
| B | BLK | 1750 | Ground |
Marker Lamp - LF (Domestic)
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A | LT BLU | 2114 | Left Turn Signal Lamps Supply Voltage |
| B | BRN | 2309 | Front Park Lamps Supply Voltage |
Marker Lamp - LF (Export)
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A | BLK | 150 | Ground |
| B | BRN | 2309 | Front Park Lamps Supply Voltage |
Marker Lamp - LR (X88)
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A | BRN | - | Left Rear Park Lamps Supply Voltage |
| BRN | - | Left Rear Park Lamps Supply Voltage | |
| B | DK BLU | - | Left Turn Signal Lamps Supply Voltage |
| DK BLU | - | Left Turn Signal Lamps Supply Voltage | |
Marker Lamp - RF (Domestic)
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A | DK BLU | 2115 | Right Turn Signal Lamps Supply Voltage |
| B | BRN | 2309 | Front Park Lamps Supply Voltage |
Marker Lamp - RF (Export)
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A | BLK | 150 | Ground |
| B | BRN | 2309 | Front Park Lamps Supply Voltage |
Marker Lamp - RR (X88)
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A | BRN | - | Right Rear Park Lamps Supply Voltage |
| BRN | - | Right Rear Park Lamps Supply Voltage | |
| B | DK BLU | - | Right Turn Signal Lamps Supply Voltage |
| DK BLU | - | Right Turn Signal Lamps Supply Voltage | |
Marker Lamp - Tailgate (NYS or E63)
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A | BRN | 2609 | Right Rear Park Lamps Supply Voltage |
| B | BLK | 1750 | Ground |
Multifunction Accessory Switch
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A | PPL/WHT | 1382 | LED Dimming Supply (w/T96) |
| B | DK GRN/WHT | 1317 | Fog Lamp Relay Control (w/T96) |
| C | ORN | 192 | Front Fog Lamp Switch Signal (w/T96) |
| D | BLK/WHT | 1851 | Ground |
| E | BRN/WHT | 230 | Instrument Panel Lamps Dimming Control |
| F | DK BLU/WHT | 149 | Cargo Lamp Low Control |
| G-K | - | - | Not Used |
Park/Turn Signal Lamp - LF
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A | LT BLU | 2114 | Left Turn Signal Lamps Supply Voltage |
| B | BRN | 2309 | Front Park Lamps Supply Voltage |
| G | BLK | 150 | Ground |
Park/Turn Signal Lamp - RF
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A | DK BLU | 2115 | Right Turn Signal Lamps Supply Voltage |
| B | BRN | 2309 | Front Park Lamps Supply Voltage |
| G | BLK | 150 | Ground |
Repeater Lamp - LF (Export)
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A | LT BLU | 2114 | Left Turn Signal Lamps Supply Voltage |
| B | BLK | 150 | Ground |
Repeater Lamp - RF (Export)
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A | DK BLU | 2115 | Right Turn Signal Lamps Supply Voltage |
| B | BLK | 150 | Ground |
Roof Beacon Relay (5X7, 5G4, TRW, or 5Y0)
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A1 | BLK | 2650 | Ground |
| A2 | BRN | 27 | Hazard Flasher Signal |
| B1-B2 | - | - | Not Used |
| C1 | ORN | 2340 | Battery Positive Voltage |
| C2 | WHT | 111 | Hazard Switch Signal |
Roof Beacon Switch (5X7, 5G4, TRW, or 5Y0)
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A | - | - | Not Used |
| B | BLK | 1050 | Ground |
| C | WHT | 111 | Hazard Switch Signal |
| D | PPL/WHT | 1382 | LED Dimming Signal |
| E | BRN/WHT | 230 | Instrument Panel Lamp Supply Voltage |
| F | ORN | 4540 | Battery Positive Voltage |
Roof Marker Lamp - Left (U01)
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A | BRN | 2409 | Interior Park Lamps Supply Voltage |
| B | BLK | 1050 | Ground |
Roof Marker Lamp - Right (U01)
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A | BRN | 2409 | Interior Park Lamps Supply Voltage |
| B | BLK | 1050 | Ground |
Stop Lamp Switch
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A | WHT | 17 | Stop Lamp Switch Signal (w/o JF4) |
| DK GRN/WHT | 1135 | A/T Shift Lock Control Solenoid Supply Voltage (w/JF4) | |
| B | ORN | 1540 | Battery Positive Voltage (w/o JF4) |
| LT GRN/BLK | 584 | A/T Shift Lock Control Switch Supply Voltage (w/JF4) | |
| C | BRN | 441 | Ignition 3 Voltage |
| D | PPL | 420 | TCC Brake Switch Signal |
| E | LT GRN/BLK | 584 | A/T Shift Lock Control Switch Supply Voltage (w/o JF4) |
| ORN | 1540 | Battery Positive Voltage (w/JF4) | |
| F | DK GRN/WHT | 1135 | A/T Shift Lock Control Solenoid Supply Voltage (w/o JF4) |
| WHT | 17 | Stop Lamp Switch Signal (w/JF4) | |
Sunload Sensor (CJ2)
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A | LT BLU/BLK | 590 | Driver Sunload Sensor Signal |
| B | GRY | 1548 | Passenger Sunload Sensor Signal |
| C | BLK | 279 | Ambient Light Sensor Low Reference |
| D | WHT | 278 | Ambient Light Sensor Signal |
Tail/Stop Lamp - Left (Chevy)
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A | LT BLU | 1320 | Stop Lamp Supply Voltage |
| B | BRN | 2509 | Left Rear Park Lamps Supply Voltage |
| G | BLK | 1750 | Ground |
Tail/Stop Lamp - Left (GMC)
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A | LT BLU | 1320 | Stop Lamp Supply Voltage |
| B | BRN | 2509 | Left Rear Park Lamps Supply Voltage |
| G | BLK | 1750 | Ground |
Tail/Stop Lamp - Right (Chevy)
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A | LT BLU | 1320 | Stop Lamp Supply Voltage |
| B | BRN/WHT | 2509 | Right Rear Park Lamps Supply Voltage |
| G | BLK | 1750 | Ground |
Tail/Stop Lamp - Right (GMC)
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A | LT BLU | 1320 | Stop Lamp Supply Voltage |
| B | BRN/WHT | 2609 | Right Rear Park Lamps Supply Voltage |
| G | BLK | 1750 | Ground |
Turn Signal - LR (Chevy)
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A | LT BLU | 2114 | Left Turn Signal Lamps Supply Voltage |
| B | - | - | Unavailable |
| G | BLK | 1750 | Ground |
| BLK | 1750 | Ground | |
Turn Signal - LR (GMC)
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A | LT BLU | 2114 | Left Turn Signal Lamps Supply Voltage |
| B | - | - | Not Used |
| G | BLK | 1750 | Ground |
Turn Signal - RR (Chevy)
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A | LT BLU | 2114 | Right Turn Signal Lamps Supply Voltage |
| B | - | - | Unavailable |
| G | BLK | 1750 | Ground |
| BLK | 1750 | Ground | |
Turn Signal - RR (GMC)
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A | LT BLU | 2115 | Right Turn Signal Lamps Supply Voltage |
| B | - | - | Unavailable |
| G | BLK | 1750 | Ground |
Turn Signal Multifunction Switch - C1
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A | LT GRN | 1427 | Right Turn Signal Switch Signal |
| B | PNK | 639 | Ignition 1 Voltage |
| C | DK GRN | 1428 | Left Turn Signal Switch Signal |
| D-F | - | - | Not Used |
| G | BLK/YEL | 28 | Horn Relay Control |
| H | WHT | 111 | Hazard Switch Signal |
Turn Signal Multifunction Switch - C2
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A | TAN | 1851 | Ground |
| B | YEL | 307 | Headlamp Switch Flash to Pass Signal |
| C | LT GRN/BLK | 11 | Headlamp Dimmer Switch Signal |
| D-E | - | - | Not Used |
Turn Signal Multifunction Switch - C3
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| G | - | - | Not Used |
| H | PNK | 94 | Windshield Wiper Switch Signal 1 |
| J | GRY | 478 | Windshield Wiper Switch Supply Voltage |
| K | DK BLU/WHT | 477 | Windshield Wiper Switch High Signal |
| L-N | - | - | Not Used |
Turn Signal Multifunction Switch - C4 (K34)
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A | BRN | 341 | Ignition 3 Voltage |
| B | GRY/WHT | 397 | Cruise Control On Switch Signal |
| C | GRY/BLK | 87 | Cruise Control Resume/Accel Switch Signal |
| D | DK BLU | 84 | Cruise Control Set/Coast Switch Signal |
Trailer Connector - Heavy Duty
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A | LT GRN | 1624 | Trailer Backup Lamps Supply Voltage |
| B | BLK | 1550 | Ground (30 Series Except Chassis Cab) |
| 1650 | Ground (30 Series Chassis Cab) | ||
| 1750 | Ground (10/20 Series) | ||
| C | DK BLU | 47 | Trailer Auxiliary Supply Voltage |
| D | DK GRN | 1619 | Trailer Right Rear Turn/Stop Lamp Supply Voltage |
| E | RED | 742 | Battery Positive Voltage |
| F | BRN | 2109 | Trailer Park Lamps Supply Voltage |
| G | YEL | 1618 | Trailer Left Rear Turn/Stop Lamp Supply Voltage |
Vanity Mirror Lamp - Left (Y91)
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A | ORN | 1732 | Inadvertent Power Supply Voltage |
| B | BLK | 1050 | Ground |
Vanity Mirror Lamp - Right (Y91)
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A | ORN | 1732 | Inadvertent Power Supply Voltage |
| B | BLK | 1050 | Ground |
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:
- β’ You smell fuel, burning insulation, or see smoke.
- β’ Brakes feel soft, pull hard to one side, or make grinding noises.
- β’ The engine overheats, stalls repeatedly, or misfires under load.
- β’ You are missing required tools, torque specs, or safe lifting equipment.
- β’ You are not confident in the next step or safety outcome.