Transmission Control Module (TCM), Engine Side (MH2)

WARNING: This page is about a different car, the 2008 Saturn Aura. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Transmission Control Module (TCM), Engine Side (MH2) Connector End View

Courtesy of GENERAL MOTORS CORP.

Pin	Wire	Circuit	Function
1	0.35 BK/WH	451	Ground
2	0.35 TN/BK	2500	High Speed GMLAN Serial Data Bus+
3-4	-	-	Not Used
5	0.35 TN/BK	2500	High Speed GMLAN Serial Data Bus+
6	0.35 PU	5526	Tap Up/Tap Down Switch Signal
7-9	-	-	Not Used
10	0.35 RD/WH	2040	Battery Positive Voltage
11	-	-	Not Used
12	0.35 TN	2501	High Speed GMLAN Serial Data Bus-
13	0.35 PK	39	Ignition 1 Voltage
14	0.35 TN	2501	High Speed GMLAN Serial Data Bus-
15	0.35 BN	4	Accessory Voltage
16	0.35 WH	17	Stop Lamp Switch Signal
17	-	-	Not Used
18	0.35 BK/WH	451	Ground
19	-	-	Not Used
20	0.35 OG/BK	1786	Park/Neutral Signal

Connector Part Information

OEM: 13570698
Service: Non-Serviceable
Description: CONN 20F GT 150 Sealed (D-BU)

Terminal Part Information

Terminal/Tray: Non-Serviceable
Core/Insulation Crimp: Non-Serviceable
Release Tool/Test Probe: Non-Serviceable