Automatic Transmission Inline Harness 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 C175 Connector - Transmission Side

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		12160782 20-Way M Micro-Pack 100 Series (GRY)
Pin	Wire Color	Circuit No.	Function
A	DK GRN	1222	Shift Solenoid C Valve Control
B	YEL/BLK	1223	Shift Solenoid D Valve Control
C	PNK	839	12 Volt Reference
D	LT GRN	1224	Fluid Pressure Switch Signal C
E	RED	1226	Fluid Pressure Switch Signal E
F	DK BLU	1225	Fluid Pressure Switch Signal D
G	YEL	1227	TFT Sensor Signal
H	BLK	407	Low Reference
J	BRN	418	TCC PWM Solenoid Valve Control
K	TAN	901	Fluid Pressure Switch Reverse Signal
L	RED/BLK	1228	PPC Solenoid A Valve High Control
M	LT BLU	1229	PPC Solenoid A Valve Low Control
N	GRY	908	PPC Solenoid B Valve High Control
P	PPL	904	PPC Solenoid B Valve Low Control
R	ORN	1530	Modulated Main Pressure
S	BLK	902	TCC PWM Solenoid Supply Voltage
T	WHT	900	Trans ID
U-V	-	-	Not Used
W	BLK/WHT	452	Shift Solenoid E Valve Control

Inline Harness Connector C175 Connector - Engine Side

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		12186609 20-Way F Micro-Pack 100W (GRY)
Pin	Wire Color	Circuit No.	Function
A	LT GRN	1222	Shift Solenoid C Valve Control
B	YEL/BLK	1223	Shift Solenoid D Valve Control
C	BRN	323	12 Volt Reference
D	PNK	1224	Fluid Pressure Switch Signal C
E	RED	1226	Fluid Pressure Switch Signal E
F	DK BLU	1225	Fluid Pressure Switch Signal D
G	YEL/BLK	1227	TFT Sensor Signal
H	BLK	2762	Low Reference
J	BRN	418	TCC PWM Solenoid Valve Control
K	LT GRN/BLK	2529	Fluid Pressure Switch Reverse Signal
L	LT BLU/WHT	1229	PPC Solenoid A Valve High Control
M	RED/BLK	1228	PPC Solenoid A Valve Low Control
N	PNK/BLK	2468	PPC Solenoid B Valve High Control
P	BRN/WHT	2469	PPC Solenoid B Valve Low Control
R	DK BLU	1530	Modulated Main Pressure
S	DK GRN/WHT	2528	TCC PWM Solenoid Supply Voltage
T	PPL	2471	Trans ID
U-V	-	-	Not Used
W	ORN/WHT	2527	Shift Solenoid E Valve Control