GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Saturn 🢒 2003 🢒 ION 🢒 Transmission/Transaxle 🢒 Automatic Transmission - VT25-E 🢒 Automatic Transmission Controls Schematics
Figure 1:

Module Power, Ground, DLC, PNP Switch Signals, and Message Center Controls
Object Number: 870223 Size: FS
Master Electrical Component List
Transmission General Description
Ratio Control, Sensors, and Solenoids
OBD II Symbol Description Notice
Fuse Block-Underhood Fuses: ABS, ABS1, ABS2, ECM, ECM/TCM, IGN, LH HDLP, PREM AUDIO, RH HDLP, and RUN/CRANK
Fuse Block-Underhood Fuses: BACK UP, TRANS1, and TRANS2
Automatic Transmission Schematic Icons
Data Link Connector (DLC) Schematics
G103, G105, and G109 - Late Production
G103, G105, G107, and G109
G103, G105, and G109 - Late Production
Figure 2:

Ratio Control, Sensors, and Solenoids
Object Number: 870230 Size: FS
Master Electrical Component List
Transmission General Description
Module Power, Ground, DLC, PNP Switch Signals, and Message Center Controls
OBD II Symbol Description Notice
Fuse Block-Underhood Fuses: BACK UP, TRANS1, and TRANS2
Automatic Transmission Schematic Icons