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Ron Z.
Ron Z., - GMC Tech -
Category: GM
Satisfied Customers: 17802
Experience:  18+yrs experience. State Inspector & GM Diagnostics/Repair
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2003 gmc sierra 2500 code p0443 what could be the problem .thank you

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2003 gmc sierra 2500 code p0443 what could be the problem .
thank you

Welcome! I'm Ron Z! I will do my best to answer all of your questions. For easy access to this thread, bookmark it now! Please read everything!

The P0443 is a fairly straight forward code pointing to a fault in the EVAP Purge Solenoid. Carefully inspect the vacuum lines for any cracks, holes or loose/missing connections. Inspect the electrical connector for any loose, broken or rubbed through wires. If the visual inspection checks ok, suspect a faulty solenoid.


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