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:

Transmission Control Module (TCM)


Object Number: 1857729  Size: LF
(1)Radiator
(2)Transmision Control Module (TCM)
(3)Fuse Block-Underhood Bracket