GM Service Manual Online
For 1990-2009 cars only
Makes
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Chevrolet
🢒
2003
🢒
Astro - 2WD
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Body and Accessories
🢒 Data Link Communications
Body and Accessories
All Component Locator
Data Link Communications Component Views
All Description and Operation
Data Link Communications Description and Operation
All Visual Identification
Data Link Communications Connector End Views
Diagnostic Procedures
Diagnostic Starting Point - Data Link Communications
Scan Tool Does Not Communicate with Class 2 Device
Scan Tool Does Not Power Up
Symptoms - Data Link Communications
Diagnostic Trouble Codes
Diagnostic Trouble Code (DTC) List
DTC U1000 and U1255
DTC U1001-U1254
DTC U1300, U1301, or U1305
Electrical/Electronic Schematic Diagrams
Data Link Communications Schematic Icons
Data Link Connector Schematics