Back View of PCM Connector End View (FWD) C1

Courtesy 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	BN	Ground
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	BK/YE	Camshaft Position (CMP) Actuator Solenoid Valve High Control
13	YE	Camshaft Position (CMP) Actuator Solenoid Valve Low Control
14	L-GN/BK	Fan 2 Relay Control
15	-	Not Used
16	RD	Ignition Positive Voltage
17	BK	Crank Signal
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
22-23	-	Not Used
24	BU/YE	Ignition Fail Safe Input
25-26	-	Not Used
27	RD	EVAP Canister Vent Solenoid Valve Control
28	BN	Sensor Ground
29	BU/WH	Mass Air Flow (MAF) Sensor Signal Low
30	GN	Mass Air Flow (MAF) Sensor Signal High
31	L-GN	Throttle Position (TP) Sensor 2 Input
32-33	-	Not Used
34	BU/BK	EVAP Canister Purge Solenoid Valve Control
*Automatic Transmission Only