2005 Pontiac Sunfire AutomaticFACTORY OEM SERVICE PROCEDURE

Body Control Module (BCM) Connector End Views

Body Control Module (BCM) C1

GM362758Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 12191375
  • 16-Way F Micro-Pack 100 Series (PPL)
Pin Wire Color Circuit No. Function
A1-A2 - - Not Used
A3 WHT 194 Door Unlock Control
A4 LT BLU 195 Door Lock Control
A5 BLK/WHT 56 Trunk Release Motor-Control or Supply Voltage
A6 TAN 694 Driver Door Lock Actuator Unlock
A7 LT GRN/BLK 394 Driver Door Jamb Switch Signal
A8 LT BLU 395 Passenger Door Jamb Switch Signal
B1-B7 - - Not Used
B8 PPL 1807 Class 2 Serial Data
Body Control Module (BCM) C2

GM130690Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 12110206
  • 24-Way F Micro-Pack 100 Series (LT BLU)
Pin Wire Color Circuit No. Function
A1 BRN 9 Park Lamp Supply Voltage
A2 - - Not Used
A3 YEL 43 Accessory Voltage
A4 ORN/BLK 737 Rear Compartment Lamp Control
A5 BRN/WHT 230 Instrument Panel Lamps Dimming Control
A6 PNK 1200 Headlamp High Beam Signal
A7 YEL 1836 Security System Sensor Signal
A8-A9 - - Not Used
A10 ORN 1732 Courtesy Lamps Supply Voltage
A11 ORN 1440 Battery Positive Voltage
A12 ORN 340 Battery Positive Voltage
B1 BLK/WHT 451 Ground
B2 LT BLU 1134 Park Brake Switch Signal
B3 - - Not Used
B4 BLK/WHT 1576 Trunk Release Switch Signal
B5 - - Not Used
B6 DK BLU 1201 Headlamp Low Beam Signal
B7 PPL 1807 Class 2 Serial Data
B8 PPL 1807 Class 2 Serial Data
B9 PPL 1807 Class 2 Serial Data
B10 ORN 1940 Battery Positive Voltage
B11 BLK/WHT 251 Ground
B12 - - Not Used
Body Control Module (BCM) C3

GM255037Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 12160778
  • 24-Way F Micro-Pack 100 Series (BRN)
Pin Wire Color Circuit No. Function
A1 WHT 156 Courtesy Lamp Low Control
A2 GRY 8 Instrument Panel Lamp Supply Voltage
A3 - - Not Used
A4 LT GRN/BLK 592 DRL Relay Control
A5 BRN 323 Shift Lock Actuator Feed
A6-A8 - - Not Used
A9 BRN/WHT 1571 Traction Control Switch Signal (Pontiac Only)
A10 LT GRN 66 A/C Request Signal
A11 ORN 192 Front Fog Lamp Switch Signal
A12 PNK 39 Ignition 1 Voltage
B1 PPL 719 Low Reference
B2 BLK/WHT 151 Ground
B3 BLK 1835 Security System Sensor Low Reference
B4 - - Not Used
B5 DK GRN/WHT 1317 Fog Lamp Relay Control
B6 - - Not Used
B7 BLK 28 Horn Relay Control
B8 YEL/BLK 68 Low Coolant Level Indicator Control
B9 GRY 728 Security Indicator Control
B10 WHT 1459 Security System Sensor Supply Voltage
B11 PNK 849 Brake Fluid Level Sensor Signal
B12 LT GRN 80 Key In Ignition Switch Signal
Factory Service Tools

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.

Shop Manual-Ready ToolsCompare Repair QuoteQuote Shield Pro

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.