GM Service Manual Online
For 1990-2009 cars only
Makes
🢒
Cadillac
🢒
1999
🢒
Catera
🢒
Body and Accessories
🢒 Data Link Communications
Body and Accessories
All Component Locator
Data Link Communications Components
All Description and Operation
Data Link Communications Operation
All Special Tools and Equipment
Special Tools
All Visual Identification
Data Link Communications Connector End Views
Diagnostic Procedures
Diagnostic System Check - Data Link Communications
Diagnostic Trouble Code (DTC) List
Scan Tool Does Not Communicate with Automatic Level Control Sensor
Scan Tool Does Not Communicate with Class 2 Data Line
Scan Tool Does Not Communicate with Electronic Brake and Traction Control Module
Scan Tool Does Not Communicate with Engine Control Module
Scan Tool Does Not Communicate with Heater and Air Conditioning (A/C) Control
Scan Tool Does Not Communicate with Instrument Cluster
Scan Tool Does Not Communicate with Memory Seat Module
Scan Tool Does Not Communicate with Power Steering Control Module
Scan Tool Does Not Communicate with Sensing and Diagnostic Module
Scan Tool Does Not Communicate with Sunroof Actuator
Scan Tool Does Not Communicate with Theft Deterrent Module
Scan Tool Does Not Communicate with Transmission Control Module
Scan Tool Inoperative
Diagnostic Trouble Codes
DTC U1128 Loss of Communications with IRC
DTC U1255 Generic Loss of Class 2 Data
DTC U1300 Class 2 Short to Ground
DTC U1301 Class 2 Short to Battery
DTC U2100 CAN-BUS Communication Malfunction
DTC U2103 Fewer Controllers On Bus Than Programmed
DTC U2104 CAN Bus Reset Counter Overrun
DTC U2105 Lost Comm with Engine Control System
DTC U2106 Lost Comm with Trans Control System
DTC U2108 Lost Comm with ABS Control System
Electrical/Electronic Schematic Diagrams
Data Link Communications Schematic Icons
Data Link Communications Schematic References
Data Link Connector Schematics