Transmission Control Module Connector End Views

Transmission Control Module C1

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		1928403820 Conn 38F (BK)
Pin	Wire Color	Circuit No.	Function
1-15	-	-	Not Used
16	BN/WH	2960	Keyword Serial Data
17-20	-	-	Not Used
21	YE	743	Accessory Voltage
22	PK	639	Ignition 1 Voltage
23	BK/WH	451	Ground
24	-	-	Not Used
25	TN/BL	2500	High Speed GMLAN Serial Data Bus+
26	TN	2501	High Speed GMLAN Serial Data Bus-
27-30	-	-	Not Used
31	PK	639	Ignition 1 Voltage
32	BK/WH	451	Ground
33	RD/WH	1440	Battery Positive Voltage
34	-	-	Not Used
35	TN/BL	2500	High Speed GMLAN Serial Data Bus+
36	TN	2501	High Speed GMLAN Serial Data Bus-
37-38	-	-	Not Used

Transmission Control Module C2

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		1928403311 Conn 38F (BK)
Pin	Wire Color	Circuit No.	Function
1-5	-	-	Not Used
6	TN/WH	771	Transmission Range Switch Signal A
7	GY	773	Transmission Range Switch Signal C
8	PU	898	Shift Solenoid Valve 3 High Control
9-11	-	-	Not Used
12	D-BU	5509	TCC Pressure Control Solenoid Low Reference
13	OR/WH	2527	Shift Solenoid Valve 5 High Control
14	YE/BK	2879	Shift Solenoid Valve 4 High Control
15	PU/WH	5510	Line Pressure Control Solenoid Valve Low Control
16	YE	772	Transmission Range Switch Signal B
17	WH	776	Transmission Range Switch Signal P
18-20	-	-	Not Used
21	TN/WH	585	Transmission Fluid Temperature Sensor Signal
22	D-BU/WH	1231	ISS Sensor Signal
23	PU	401	OSS Sensor Signal
24	YE/BK	1223	Shift Solenoid Valve 2 High Control
25	D-GN	5511	TCC Pressure Control Solenoid Valve High Control
26	WH	2880	Shift Pressure Control Solenoid Valve High Control
27-30	-	-	Not Used
31	OR/BK	586	Transmission Fluid Temperature Sensor Low Reference
32	OR/BK	1230	ISS Sensor High Reference
33	YE	400	OSS Sensor High Reference
34	L-GN	1222	Shift Solenoid Valve 1 High Control
35	WH	1994	Line Pressure Control Solenoid Valve High Control
36	GY	5508	Shift Pressure Control Solenoid Valve Low Control
37-38	-	-	Not Used