2004 Pontiac Vibe GTFACTORY OEM SERVICE PROCEDURE

Powertrain Control Module (PCM) Connector End Views

Back View of the PCM Connector End Views C1

GM789637Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 34-Pin
  • WHT
Pin Wire Color Function
1 YEL Fuel Injector 1 Control
2 BLK Fuel Injector 2 Control
3 WHT Fuel Injector 3 Control
4 BLU Fuel Injector 4 Control
5 BLK/BLU Idle Air Control (IAC) Valve Control
6 WHT/BLK Ground
7 WHT/BLK Ground
8 RED/BLU Ignition Trigger Signal Coil 1
9 YEL/GRN Ignition Trigger Signal Coil 2
10 GRY Ignition Trigger Signal Coil 3
11 WHT Ignition Trigger Signal Coil 4
12 BLU/BLK EVAP Canister Purge Solenoid Valve Control
13 YEL AC Pressure Switch
14 BLK/YEL Camshaft Position (CMP) Actuator Solenoid Valve High Control
15 YEL Camshaft Position (CMP) Actuator Solenoid Valve Control Low
16 PNK Line Pressure Control (PC) Solenoid Control Low*
17 RED/WHT Line Pressure Control (PC) Solenoid Control High*
18 YEL 5-Volt Reference Circuit
19 WHT Engine Coolant Temperature (ECT) Sensor Input
20 YEL/BLK Intake Air Temperature (IAT) Sensor Input
21 LT GRN Throttle Position (TP) Sensor Input
22 - Not Used
23 BLU/YEL Ignition Fail Safe Input
24 BLU/YEL Rocker Arm Oil Control Solenoid Valve Control High
25 BLK Rocker Arm Oil Control Solenoid Valve Control Low
26 BLK Camshaft Position (CMP) Sensor Input
27 BLK Crankshaft Position (CKP) Sensor Input
28 BRN Sensor Ground
29 - Not Used
30 LT GRN Secondary AIR Injection Pressure Sensor Input
31-32 - Not Used
33 BLK/BLU Secondary AIR Injection Solenoid Valve Control
34 WHT CMP Sensor and CKP Sensor Ground
Back of the Connector View C2

GM789639Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • 35-Pin
  • WHT
Pin Wire Color Function
1 BLK Knock Sensor (KS) Signal High
2 WHT Knock Sensor (KS) Signal Low
3 BLK/ORN Secondary AIR Injection Pump Relay Control
4 PNK Heated Oxygen Sensor (HO2S) 1 Heater Circuit Control
5 WHT/BLK Ground
6 - Not Used
7 BRN Ground
8 RED Ignition Positive Voltage*
9 BLK Crank Signal
10 - Not Used
11 BLK Torque Converter Clutch (TCC) Solenoid Control*
12-14 - Not Used
15 BLU Overdrive (OD) Shift Solenoid Control*
16 BLU/WHT Shift Solenoid (SS) 2 Control Low*
17 BLU/ORN Shift Solenoid (SS) 2 Control High*
18 BLU Shift Solenoid (SS) 1 Control Low*
19 RED/YEL Shift Solenoid (SS) 1 Control High*
20 - Not Used
21 WHT Heated Oxygen Sensor (HO2S) 2 Input
22 - Not Used
23 RED Heated Oxygen Sensor (HO2S) 1 Input
24 GRN Mass Air Flow (MAF) Sensor Signal High
25 - Not Used
26 RED Counter Gear Speed Sensor Reference High*
27 WHT Input Shaft Speed Sensor Reference High*
28 WHT/BLK Ground
29 BLU/RED Power Steering Pressure (PSP) Switch Input
30-31 - Not Used
32 BLU/WHT Mass Air Flow (MAF) Sensor Signal Low
33 BLK/WHT Rocker Arm Oil Pressure Switch Input
34 GRN Counter Gear Speed Sensor Reference Low*
35 BLK Input Shaft Speed Sensor Reference Low*
Back View of the Connector View C3

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

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

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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.

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