Back View of PCM Connector End View C2

Courtesy 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
3-5	-	Not Used
6	PK	Heated Oxygen Sensor (HO2S) 1 Heater Circuit Control
7	WH/BK	Ground
8	GY	EVAP Vacuum Leak Pump Control
9	L-GN/BK	Fan 2 Relay Control
10-15	-	Not Used
16	BU/YE	Rocker Arm Oil Control Solenoid Valve Control High
17	BK	Rocker Arm Oil Control Solenoid Valve Control Low
18	-	Not Used
19	BU/BK	EVAP Canister Purge Solenoid Valve Control
20	-	Not Used
21	L-GN	Fan 1 Relay Control
22	RD	Heated Oxygen Sensor (HO2S) 1 Input
23-26	-	Not Used
27	YE	AC Pressure Switch
28	WH/BK	Ground
29	-	Not Used
30	BU/RD	Power Steering Pressure (PSP) Switch Input
31-35	-	Not Used