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

DLC Power, Ground and IPM


Object Number: 1823244  Size: FS
Master Electrical Component List
Data Link Communications Description and Operation
Control Module References
GM LAN - High Speed, Domestic w/ UE1, w/ F55 , w/o F55
Fuse Block Underhood Wiring Bussing
Fuse Block - Underhood Fuses/Relays: IPM/ALDL, Auto Headlamp Dimming, CCP, ECM/TCM, WPR MOD, WPR SW/VICS and Rain Sensor/HDLP Wash Fuses; ACC Relay
G200 (2 of 2)
G200 (2 of 2)
Figure 2:

GMLAN - High Speed, Domestic w/UE1, F55 w/o F55


Object Number: 1823257  Size: FS
Master Electrical Component List
Data Link Communications Description and Operation
Control Module References
GM LAN - High Speed, Domestic w/ UE1, K59, F55
DLC Power, Ground and IPM
Data Communication Schematic Icons
Data Communication Schematic Icons
Data Communication Schematic Icons
Data Communication Schematic Icons
Data Communication Schematic Icons
Data Communication Schematic Icons
Data Communication Schematic Icons
Data Communication Schematic Icons
Figure 3:

GMLAN - High Speed, Domestic w/UE1, K59, F55


Object Number: 1823261  Size: FS
Master Electrical Component List
Data Link Communications Description and Operation
Control Module References
GM LAN - High Speed, Export w/ TR7/LC3 w/o UE1
GM LAN - High Speed, Domestic w/ UE1, w/ F55 , w/o F55
Data Communication Schematic Icons
Data Communication Schematic Icons
Data Communication Schematic Icons
Data Communication Schematic Icons
Data Communication Schematic Icons
Data Communication Schematic Icons
Data Communication Schematic Icons
Data Communication Schematic Icons
Data Communication Schematic Icons
Data Communication Schematic Icons
Data Communication Schematic Icons
Data Communication Schematic Icons
Data Communication Schematic Icons
Figure 4:

GMLAN - High Speed, Export w/TR7/LC3 w/o UE1


Object Number: 1823264  Size: FS
Master Electrical Component List
Data Link Communications Description and Operation
Control Module References
GM LAN - High Speed, Export w/ TR7/F55/LC3 w/o UE1
GM LAN - High Speed, Domestic w/ UE1, K59, F55
Data Communication Schematic Icons
Data Communication Schematic Icons
Data Communication Schematic Icons
Data Communication Schematic Icons
Data Communication Schematic Icons
Data Communication Schematic Icons
Data Communication Schematic Icons
Data Communication Schematic Icons
Figure 5:

GMLAN - High Speed, Export w/TR7/F55/LC3 w/o UE1


Object Number: 1823268  Size: FS
Master Electrical Component List
Data Link Communications Description and Operation
Control Module References
GM LAN - High Speed, Export w/ TT7/TT8, F55, K59 w/o UE1
GM LAN - High Speed, Export w/ TR7/LC3 w/o UE1
Data Communication Schematic Icons
Data Communication Schematic Icons
Data Communication Schematic Icons
Data Communication Schematic Icons
Data Communication Schematic Icons
Data Communication Schematic Icons
Data Communication Schematic Icons
Data Communication Schematic Icons
Data Communication Schematic Icons
Data Communication Schematic Icons
Data Communication Schematic Icons
Figure 6:

GMLAN - High Speed, Export w/TT7/TT8, F55, K59 w/o UE1


Object Number: 1823272  Size: FS
Master Electrical Component List
Data Link Communications Description and Operation
Control Module References
GM LAN - Low Speed 1 of 2
GM LAN - High Speed, Export w/ TR7/F55/LC3 w/o UE1
Data Communication Schematic Icons
Data Communication Schematic Icons
Data Communication Schematic Icons
Data Communication Schematic Icons
Data Communication Schematic Icons
Data Communication Schematic Icons
Data Communication Schematic Icons
Data Communication Schematic Icons
Data Communication Schematic Icons
Data Communication Schematic Icons
Data Communication Schematic Icons
Data Communication Schematic Icons
Data Communication Schematic Icons
Figure 7:

GMLAN - Low Speed 1 of 2


Object Number: 1823278  Size: FS
Master Electrical Component List
Data Link Communications Description and Operation
Control Module References
GM LAN - Low Speed 2 of 2
GM LAN - High Speed, Export w/ TT7/TT8, F55, K59 w/o UE1
GM LAN - Low Speed 2 of 2
GM LAN - Low Speed 2 of 2
Data Communication Schematic Icons
Figure 8:

GMLAN - Low Speed 2 of 2


Object Number: 1823283  Size: FS
Master Electrical Component List
Data Link Communications Description and Operation
Control Module References
GM LAN - High Speed Serial Data Wake Up
GM LAN - Low Speed 1 of 2
GM LAN - Low Speed 1 of 2
GM LAN - Low Speed 1 of 2
Figure 9:

GMLAN - High Speed Serial Data Wake Up


Object Number: 1823286  Size: FS
Master Electrical Component List
Data Link Communications Description and Operation
Control Module References
GM LAN - Low Speed 2 of 2