GM Service Manual Online
For 1990-2009 cars only
Figure 1:

Automatic Transmission Electronic Component Locations


Object Number: 804365  Size: LF
(42)Output Speed Sensor (OSS)
(44)Input Speed Sensor (ISS)
(55)Transmission Fluid Temperature (TFT) Sensor - Part of Automatic Transmission Wiring Harness (55)
(352)TCC PWM Solenoid Valve
(357)Pressure Control Solenoid (PCS) Assembly
(368)1-2 Shift Solenoid (SS) Valve Assembly
(369)2-3 Shift Solenoid (SS) Valve Assembly
(376)4-5 Shift Solenoid (SS) Valve Assembly
(602)Transmission Manual Shift Shaft Switch Assembly
Figure 2:

Control Module Location


Object Number: 1616731  Size: MF
(1)Electronic Control Module (ECM)
(2)ECM Bracket Bolt
(3)ECM Bracket
(4)Transmission Control Module (TCM) Bolt
(5)TCM