Transmission Control Module Connector End View

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		Conn 42F Module 1 Socket Housing
Pin	Wire Color	Circuit No.	Function
1	YE	400	OSS High Signal
2	PU	401	OSS Low Signal
3	OG/BK	1228	PC Solenoid Valve High Control (HSD1)
4	BN	418	TCC PWM Solenoid Valve Control
5	YE	343	Accessory Voltage
6	BK/WH	751	Ground
7	-	-	Not Used
8	OG	1525	Solenoid Power Supply (HSD2)
9	PK	239	Ignition Voltage
10	OG/BK	1230	ISS High Signal
11	D-BU /WH	1231	ISS Low Signal
12	-	-	Not Used
13	-	-	Not Used
14	-	-	Not Used
15	YE/BK	1227	TFT Sensor Signal
16-17	-	-	Not Used
18	YE/BK	1223	2-3 Shift Solenoid Valve Control
19	PU	898	4-5 Shift Solenoid Valve Control
20	WH	2500	High Speed GMLAN Serial Data Bus (+)
21	D-BU	2501	High Speed GMLAN Serial Data Bus (-)
22-23	-	-	Not Used
24	YE	772	Transmission Range Switch Signal B
25	GY	773	Transmission Range Switch Signal C
26	TN	2762	TFT Sensor Low Reference
27	RD/WH	1440	Battery Positive Voltage
28	-	-	Not Used
29	L-BU /WH	1229	PC Solenoid Valve Low Control
30	L-GN	1222	1-2 Shift Solenoid Valve Control
31	-	-	Not Used
32	WH	2500	High Speed GMLAN Serial Data Bus + (CAN)
33	GN	2501	High Speed GMLAN Serial Data Bus - (CAN)
34-35	-	-	Not Used
36	TN/WH	771	Transmission Range Switch Signal A
37	WH	776	Transmission Range Switch Signal P
38	OG	5371	BAS Relay Coil Supply Voltage
39-42	-	-	Not Used