Multiple Cylinder Deactivation Solenoid Circuit Codes

By dtreid
March 17, 2020 in Engines & Drivetrain

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dtreid

Posted March 17, 2020

New to me 2014 GMC 1500 with 5.3 motor I've got multiple cylinder deactivation solenoid valve control circuit codes: P3401 P3425 P3441 P3449 No misfire codes. Engine runs great. Any ideas on troubleshooting steps. Seems like it must be an electrical issue?

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