GM Service Manual Online
For 1990-2009 cars only
Makes
🢒
Cadillac
🢒
2004
🢒
DeVille
🢒
Transmission/Transaxle
🢒
Automatic Transaxle - 4T80-E
🢒 Automatic Transmission Controls Schematics
Figure
1:
PCM Power and Grounds
Master Electrical Component List
Transmission General Description
Solenoids and Stop Lamp Switch
Ignition Switch
Starting System
Ignition Switch
Underhood Fuse Block- PCM IGN and IGN1 Fuses
Underhood Fuse Block- ALDL, PCM BATT, and I/P Fuse
Rear Fuse Block- RR BLO, RRDR MDL, HVAC BAT, STOP LP, IGN SW, TSIG/HAZ Fuse
Ignition Switch
G100
Figure
2:
Stop Lamp Switch and Transaxle Solenoids
Master Electrical Component List
Transmission General Description
Internal Mode Switch and VSS
Sensors
Cruise Control Switches and Module Power and Gruond
Rear Fuse Block- SIR, VENT SOL, IGN 1Fuse
Underhood Fuse Block- OXY SEN, CR CONT, MDL COIL, TRANS Fuses
Figure
3:
Sensors
Master Electrical Component List
Transmission General Description
PCM Power and Ground
Solenoids and Stop Lamp Switch
Figure
4:
Transmission Internal Mode Switch (IMS) and VSS
Master Electrical Component List
Transmission General Description
Sensors
G100