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P0449 Diagnostic Trouble Code Discussion for November 2013

EVAP Vent Solenoid Control Circuit Malfunction

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Trouble Ticket Help Requests for DTC P0449
Help Request Posted
2008 Chevrolet Silverado 1500 WT 5.3L MIL Lamp on VIN: 1GCEK19068
P0449: EVAP vent sol. ckt. ... one.have p0449 code.tested system found ecm not switching solenoid with tech2.have a ground on the white wire at vent valve.bat volts on rd/wh wire.disconnect ecm and ground goes away.ohm all wiring no short to ground.thought that ecm was bad,installed/pro...
November 27, 2013