Engine Side Connector End View

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		12160493 20-Way F Micro-Pack 100 Series (GY)
Pin	Wire Color	Circuit No.	Function
A	L-GN	1222	1-2 Shift Solenoid Valve Control
B	YE/BK	1223	2-3 Shift Solenoid Valve Control
C	OG/BK	1228	Pressure Control (PC) Solenoid Valve High Control
D	L-BU/WH	1229	PC Solenoid Valve Low Control
E	PK	39	Ignition 1 Voltage
F-K	-	-	Not Used
L	YE/BK	1227	Transmission Fluid Temperature (TFT) Sensor Signal
M	TN	2762	Low Reference
N	-	-	Not Used
P	OG	1226	TFP Manual Valve Position Switch Signal C
R	D-BU	1225	TFP Manual Valve Position Switch Signal B
S	OG/BK	1230	Input Speed Sensor (ISS) High Signal
T	BN	418	Torque Convertor Clutch Pulse Width Modulated (TCC PWM) Solenoid Valve Control
U	YE	657	TCC Release Switch Signal
V	D-BU/WH	1231	ISS Low Signal
W	-	-	Not Used