GM Service Manual Online
For 1990-2009 cars only

Automatic Transmission Controls Schematics 4.2L

Figure 1:

Shift Controls and Stop Lamp Switch


Object Number: 1621506  Size: FS
Master Electrical Component List
Transmission Component and System Description
Control Module References
Pressure Controls, Temperature, and VSS
Automatic Transmission Schematic Icons
G104, G105 and G107
B+ Bus - Underhood Fuse Block - 2 of 2
BCK/UP, BTSI, IGN E, and TRLR BCK/UP Fuses
BCK/UP, BTSI, IGN E, and TRLR BCK/UP Fuses
BCK/UP, BTSI, IGN E, and TRLR BCK/UP Fuses
G104, G105 and G107
BCK/UP, BTSI, IGN E, and TRLR BCK/UP Fuses
Ignition Switch - ACCY/RUN/START, RUN, START Bus Bars and IGNA1 Fuse
B+ Bus - Rear Fuse Block
4WD, BRK, FRT WPR, HVAC I, IGN 0, and TCM Fuses
Figure 2:

Pressure Controls, Temperature, and VSS


Object Number: 1621597  Size: FS
Master Electrical Component List
Transmission Component and System Description
Control Module References
PNP Switch, Serial Data, and Indicators
Shift Control and Stop Lamp Switch
Automatic Transmission Schematic Icons
Automatic Transmission Schematic Icons
Automatic Transmission Schematic Icons
Figure 3:

PNP Switch, Serial Data, and Indicator


Object Number: 1621637  Size: FS
Master Electrical Component List
Transmission Component and System Description
Control Module References
Pressure Controls, Temperature, and VSS
Automatic Transmission Schematic Icons
G108
SP 205

Automatic Transmission Controls Schematics 5.3L

Figure 1:

Module Power, Ground, Serial Data, and Stop Lamp Switch


Object Number: 1621638  Size: FS
Master Electrical Component List
Electronic Component Description (TCM)
Control Module References
Transmission Controls
Automatic Transmission Schematic Icons
EAP, ECM, PCMB, TBC I, and TCM CNSTR Fuses
B+ Bus - Underhood Fuse Block - 1 of 2
G104, G105 and G107
B+ Bus - Underhood Fuse Block - 2 of 2
AIRBAG, ECM I, and TRANS Fuses
Ignition Switch - ACCY/RUN, RUN/START Bus Bars and IGNB1 Fuse
G201 - 1 of 2
B+ Bus - Rear Fuse Block
4WD, BRK, FRT WPR, HVAC I, IGN 0, and TCM Fuses
ABS, ATC, BLWR, ECAS, ELEC BRK, HAZRD, IPC/DIC, LTR, STOP LAMP, TRLR, VEH CHMSL, VEH STOP, and VSES Fuses
G104, G105 and G107
AIRBAG, ECM I, and TRANS Fuses
G201 - 1 of 2
ABS, ATC, BLWR, ECAS, ELEC BRK, HAZRD, IPC/DIC, LTR, STOP LAMP, TRLR, VEH CHMSL, VEH STOP, and VSES Fuses
ABS, ATC, BLWR, ECAS, ELEC BRK, HAZRD, IPC/DIC, LTR, STOP LAMP, TRLR, VEH CHMSL, VEH STOP, and VSES Fuses
ABS, ATC, BLWR, ECAS, ELEC BRK, HAZRD, IPC/DIC, LTR, STOP LAMP, TRLR, VEH CHMSL, VEH STOP, and VSES Fuses
Power, Ground, Data Link Connector
ABS, ATC, BLWR, ECAS, ELEC BRK, HAZRD, IPC/DIC, LTR, STOP LAMP, TRLR, VEH CHMSL, VEH STOP, and VSES Fuses
G108
G108
Figure 2:

Transmission Controls


Object Number: 1621650  Size: FS
Master Electrical Component List
Electronic Component Description (TCM)
Control Module References
Pressure Controls, Temperature, and VSS
Module Power, Ground, Serial Data, and Stop Lamp Switch
Engine Controls Schematic Icons
G104, G105 and G107
B+ Bus - Underhood Fuse Block - 2 of 2
AIRBAG, ECM I, and TRANS Fuses
AIRBAG, ECM I, and TRANS Fuses
G104, G105 and G107
Figure 3:

Pressure Controls, Temperature, and VSS


Object Number: 1621665  Size: FS
Master Electrical Component List
Electronic Component Description (TCM)
Control Module References
Transmission Controls
Automatic Transmission Schematic Icons
Automatic Transmission Schematic Icons
Automatic Transmission Schematic Icons