2005 Pontiac Vibe Base, AWDFACTORY OEM SERVICE PROCEDURE

Powertrain Control Module (PCM) Connector End Views (AWD)

Back View of PCM Connector C1

GM789637Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 34-Pin
  • WH
Pin Wire Color Function
1 YE Fuel Injector 1 Control
2 BK Fuel Injector 2 Control
3 WH Fuel Injector 3 Control
4 BU Fuel Injector 4 Control
5 BK/BU Idle Air Control (IAC) Valve Control
6 WH/BK Ground
7 WH/BK Ground
8 RD/BU Ignition Trigger Signal Coil 1
9 YE/GN Ignition Trigger Signal Coil 2
10 GY Ignition Trigger Signal Coil 3
11 WH Ignition Trigger Signal Coil 4
12 BU/BK EVAP Canister Purge Solenoid Valve Control
13 YE AC Pressure Switch
14 BK/YE Camshaft Position (CMP) Actuator Solenoid Valve High Control
15 YE Camshaft Position (CMP) Actuator Solenoid Valve Low Control
16 PK Line Pressure Control (PC) Solenoid Control Low
17 RD/WH Line Pressure Control (PC) Solenoid Control High
18 YE 5-Volt Reference Circuit
19 WH Engine Coolant Temperature (ECT) Sensor Input
20 YE/BK Intake Air Temperature (IAT) Sensor Input
21 L-GN Throttle Position (TP) Sensor 1 Input
22 - Not Used
23 BU/YE Ignition Fail Safe Input
24-25 - Not Used
26 BK Camshaft Position (CMP) Sensor Input
27 BK Crankshaft Position (CKP) Sensor Input
28 BN Sensor Ground
29 - Not Used
30 WH/BU Transmission Fluid Temperature Sensor Input, with AWD Only
31-33 - Not Used
34 WH CMP Sensor and CKP Sensor Ground
Back View of PCM Connector C2

GM789639Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 35-Pin
  • WH
Pin Wire Color Function
1 BK Knock Sensor (KS) Signal High
2 WH Knock Sensor (KS) Signal Low
3 - Not Used
4 PK Heated Oxygen Sensor (HO2S) 1 Heater Circuit Control
5 WH/BK Ground
6 - Not Used
7 BN Ground
8 RD Ignition Positive Voltage
9 BK Crank Signal
10-11 - Not Used
12 BU/OG Shift Solenoid ST Control
13 - Not Used
14 BU Shift Solenoid (SS) 2 Control
15 RD/YE Shift Solenoid (SS) 1 Control
16-18 - Not Used
19 BU/WH Torque Converter Clutch (TCC) Control
20 - Not Used
21 WH Heated Oxygen Sensor (HO2S) 2 Input
22 - Not Used
23 BK Heated Oxygen Sensor (HO2S) 1 Input
24 GN Mass Air Flow (MAF) Sensor Signal High
25-26 - Not Used
27 WH Input Shaft Speed Sensor Reference High
28 WH/BK Ground
29 BU/RD Power Steering Pressure (PSP) Switch Input
30-31 - Not Used
32 BU/WH Mass Air Flow (MAF) Sensor Signal Low
33-34 - Not Used
35 BK Input Shaft Speed Sensor Reference Low
Back View of PCM Connector C3

GM789640Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 35-Pin
  • WH
Pin Wire Color Function
1 BU EVAP Canister Vent Solenoid Valve Control
2 YE/BK AC Compressor Clutch Relay Control
3 - Not Used
4 PK/BK Heated Oxygen Sensor (HO2S) 2 Heater Circuit Control
5-6 - Not Used
7 L-GN Overdrive (OD) Indicator Control
8 L-GN/BK Park Neutral Position (PNP) Switch L Position Signal
9 L GN Park Neutral Position (PNP) Switch 2 Position Signal
10 BU Park Neutral Position (PNP) Switch D Position Signal
11 RD/BK Park Neutral Position (PNP) Switch R Position Signal
12-13 - Not Used
14 YE/RD Engine Coolant Temperature Gage Output
15-16 - Not Used
17 PU/WH Vehicle Speed Sensor (VSS) Input
18 RD/YE Overdrive (OD) Cut Signal, with Cruise Control
19 GN/WH Brake Switch Signal
20-28 - Not Used
29 GN/BK Overdrive (OD) Switch Signal
30 - Not Used
31 YEL AC Request Signal
32 BK/BU Evaporator Temperature Sensor Input
33 GN/WH AC On Signal
34-35 - Not Used
Back View of PCM Connector C4

GM789641Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 31-Pin
  • WH
Pin Wire Color Function
1 BK Ignition Positive Voltage
2 - Not Used
3 RD/WH Battery Voltage
4 RD EVAP Pressure Switching Solenoid Control
5 BK Engine Speed Output for Tachometer
6 GN Fan 1 Relay Control
7 GN/BK Fan 2 Relay Control
8 BK/WH EFI Relay High Control
9 BK/OG Ignition Positive Voltage
10 GN/RD Circuit Opening Relay Control
11 RD/YE MIL Control
12 GN Electrical Load Idle-Up Signal, Tail Lamps
13 WH Electrical Load Idle-Up Signal, Rear Defogger
14 YE Supplemental Inflatable Restraint (SIR) System Signal
15 - Not Used
16 BU/WH Cruise Control Idle
17 - Not Used
18 BU/RD Serial Data
19 PK Data Link Connector (DLC)
20 PK/BL Diagnostic Request Circuit
21 BU Fuel Tank Pressure (FTP) Sensor Input
22-31 - Not Used
Factory Service Tools

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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.