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Home >> Chevrolet >> 2009 >> Suburban C2500 >> Repair and Diagnosis >> Engine Performance >> System >> Data Communication System >> Diagnostic Information and Procedures >> DTC U1818 >> Diagnostic Fault Information
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Diagnostic Fault Information

Circuit Short to Ground Open/High Resistance Short to Voltage Signal Performance
ECM B+ 1* 1* - -
ECM Ground - 1* - -
PTLAN + U0074* U1818*, U189A U0074* -
PTLAN - U0074* U1818*, U189A U0074* -
* Other modules/DTCs will set with this fault.
1. Multiple DTCs including U1818 may set, and multiple symptoms including no start may occur
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