Automatic Transmission Inline 20-Way Connector End View (3.4L)

AT Inline 20-way Connector, Engine Side

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		15305235 20-Way F Micro-Pack 100W 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	RD/BK	1228	PC Solenoid Valve High Control
D	L-BU/WH	1229	PC Solenoid Valve Low Control
E	PK/WH	1339	Ignition 1 Voltage
F	BK/WH	771	Transmission Range Signal A
G	YE	772	Transmission Range Signal B
H	GY	773	Transmission Range Signal C
J	WH	776	Transmission Range Signal P
K	BK/WH	451	Ground
L	YE/BK	1227	TFT Sensor Signal
M	BK	2762	Low Reference
N-R	-	-	Not Used
S	RD/BK	1230	ISS High Signal
T	BN	418	TCC PWM Solenoid Valve Control
U	YE	657	TCC Release Switch Signal
V	D-BU/WH	1231	ISS Low Signal
W	-	-	Not Used

AT Inline 20-way Connector, Transmission Side

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		15409446 20-Way M Micro-Pack 100W Lock Assist/Seal (BK)
Pin	Wire Color	Circuit No.	Function
A	L-GN	1222	1-2 Shift Solenoid Valve Control
B	YE	1223	2-3 Shift Solenoid Valve Control
C	PU	1228	PC Solenoid Valve High Control
D	L-BU	1229	PC Solenoid Valve Low Control
E	RD	839	Ignition 1 Voltage
F	RD/BK	771	Transmission Range Signal A
G	D-GN/WH	772	Transmission Range Signal B
H	YE/BK	773	Transmission Range Signal C
J	GY/WH	776	Transmission Range Signal P
K	BK/WH	1050	Ground
L	BN	1227	TFT Sensor Signal
M	GY	452	Low Reference
N-R	-	-	Not Used
S	BK	1230	ISS High Signal
T	TN	418	TCC PWM Solenoid Valve Control
U	WH	1804	TCC Release Switch Signal
V	D-GN	1231	ISS Low Signal
W	OG	1786	Park/Neutral Signal