GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Generic 🢒 2005 🢒 Unit Repair 🢒 Vehicle Control Systems 🢒 Vehicle DTC Information 🢒 Data Link Connector Schematics
Figure 1:

Power, Ground, Class 2 and High Speed Serial Data
Object Number: 1409334 Size: FS
Master Electrical Component List
Data Link Communications Description and Operation
Control Module References
Low Speed Serial Data
Underhood Fuse Block IBCM 1, Body Control Module (BCM) RADIO, IGN SENSOR, HVAC HEAD/ECC, CLUSTER/THEFT and AIR BAG BATT Fuses
Underhood Fuse Block IBCM 1, Body Control Module (BCM) RADIO, IGN SENSOR, HVAC HEAD/ECC, CLUSTER/THEFT and AIR BAG BATT Fuses
Computer/Integrating Systems Schematic Icons
Computer/Integrating Systems Schematic Icons
Computer/Integrating Systems Schematic Icons
Computer/Integrating Systems Schematic Icons
Computer/Integrating Systems Schematic Icons
Computer/Integrating Systems Schematic Icons
G203
G201
Figure 2:

Low Speed Serial Data
Object Number: 1409335 Size: FS
Master Electrical Component List
Data Link Communications Description and Operation
Control Module References
Power, Ground, Class2 and High Speed Serial Data
SIR Caution for Zoning