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

DLC Power Ground and Low Speed GMLAN


Object Number: 1614695  Size: FS
Master Electrical Component List
Data Link Communications Description and Operation
Control Module References
DLC High Speed Serial Data
Rear Fuse Block B+ Bus
Rear Fuse Block - PRK LAMP, RT PRK LAMP (Export), EXP LIC LAMP (Export) Relays, I/P HARN MDL, LT PRK LAMP, RT PRK LAMP Fuses
G300
Computer/Integrating Systems Schematic Icons
G300
Figure 2:

DLC High Speed Serial Data


Object Number: 1614696  Size: FS
Master Electrical Component List
Data Link Communications Description and Operation
Control Module References
DLC High Speed Serial Data Wake Up
DLC Power, Ground, and Low Speed GMLAN
Computer/Integrating Systems Schematic Icons
Figure 3:

DLC High Speed Serial Data Wake Up


Object Number: 1614699  Size: FS
Master Electrical Component List
Data Link Communications Description and Operation
Control Module References
Local Interconnect Network (LIN)
DLC High Speed Serial Data
Rear Fuse Block IGN SWTCH, STR/WHL ILLUM Fuses
Figure 4:

Local Interconnect Network (LIN)


Object Number: 1702781  Size: FS
Master Electrical Component List
Data Link Communications Description and Operation
Control Module References
DLC High Speed Serial Data Wake Up
DLC Power, Ground, and Low Speed GMLAN