Automatic Transmission Inline 20-Way Connector

WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

Inline Harness Connector C103, Engine Side

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		12160493 14F Micro-Pack 100W Series (GRY)
Pin	Wire Color	Circuit No.	Function
A	LT GRN	1222	1-2 Shift Solenoid Valve Control
B	YEL/BLK	1223	2-3 Shift Solenoid Valve Control
C	RED/BLK	1228	Pressure Control (PC) Solenoid Valve Controlled Power
D	LT BLU/WHT	1229	PC Solenoid Valve Controlled Ground
E	PNK	1020	Transmission Solenoid Power
F-K	-	-	Not Used
L	YEL/BLK	1227	Transmission Fluid Temperature (TFT) Sensor Signal
M	GRY	720	TFT Sensor Ground
N	PNK	1224	TFP Switch Signal A
P	RED	1226	TFP Switch Signal C
R	DK BLU	1225	TFP Switch Signal B
S	BRN	418	Torque Converter Clutch (TCC) Solenoid Valve Control
T-W	-	-	Not Used

Inline Harness Connector - Transmission Side

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		12160782 14M Micro-Pack 100W Series (GRY)
Pin	Wire Color	Circuit No.	Function
A	LT GRN	1222	1-2 Shift Solenoid Valve Control
B	YEL	1223	2-3 Shift Solenoid Valve Control
C	PPL	1228	Pressure Control (PC) Solenoid Valve Controlled Power
D	LT BLU	1229	PC Solenoid Valve Controlled Ground
E	RED	839	Transmission Solenoid Power
F-K	-	-	Not Used
L	BRN	1227	Transmission Fluid Temperature (TFT) Sensor Signal
M	GRY	452	TFT Sensor Ground
N	PNK	1224	TFP Switch Signal A
P	ORN	1226	TFP Switch Signal C
R	DK BLU	1225	TFP Switch Signal B
S	BLK	418	Torque Converter Clutch (TCC) Solenoid Valve Control
T-W	-	-	Not Used