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Old 10-16-2013, 01:07 AM
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HUMTECH HUMTECH is offline
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Location: Canada
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Default Re: Check engine with DTC 0449

First check the CNSTR VENT fuse in the underhood fuse block. If you have access to a scanner command vent solenoid on and check for power and ground to vent solenoid, if ok plug it back in and command it on and off listen for it clicking. If does not click replace evap vent valve.
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1987 Jeep YJ 403hp sbc 653hp on NOS
1998 Chev Z71
2007 Chev Trailblazer SS
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