Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET2002S10 PICKUP 2D PICKUP, 2.2 5, STANDARDREPAIR AND DIAGNOSIS (SINGLE PAGE)ACCESSORIES & EQUIPMENTCOMMUNICATION DEVICESDATA LINK COMMUNICATION SYSTEM
2002 Chevrolet S10 Pickup 2D Pickup, 2.2 5, Standard
Data Link Communication System
2002 Chevrolet S10 Pickup 2D Pickup, 2.2 5, StandardSECTION Data Link Communication System
- Schematic & Routing Diagrams
- Component Locator
- Diagnostic Information & Procedures
- Diagnostic Starting Point - Data Link Communications
- DTC U1000 & U1255: Critical Operating Parameter Has Not Been Associated
- DTC U1001 to U1254: Module U1XXX Comminication
- DTC U1300, U1301 OR U1305: No Valid Messages Are Detected On The Class 2 Serial Data Circuit
- Scan Tool Does Not Power Up
- Scan Tool Does Not Communicate W/ Class 2 Device
- Description & Operation
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.