Rick's Free Auto Repair Advice

Posts Tagged: U codes on Equinox

U codes Chevrolet

U codes Chevrolet This vehicle is known for having data line problems. The data line carries digital data between different control modules. If a module shorts out, it can inject voltage onto the line which scrambles the digital data. The data line can also short to ground or break. Data line issues are difficult to diagnose, so bring plenty of patience to your job. Start with a factory wiring diagram (eautorepair.net). Next test the resistance across the 2 high speed data line wires at the diagnostic link connector (DLC). You … Read More


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