Hummer Forums by Elcova - Check engine with DTC 0449

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- - Check engine with DTC 0449 (http://www.elcovaforums.com/forums/showthread.php?t=44551)

wpage

10-15-2013 06:39 PM

Check engine with DTC 0449

Anyone change out the valve to resolve diagnostic trouble code (DTC 0449)?

HUMTECH

10-16-2013 01:07 AM

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.

wpage

10-16-2013 07:55 PM

Re: Check engine with DTC 0449

Thanks will check....:fdance:

wpage

10-17-2013 11:47 PM

Re: Check engine with DTC 0449

This link was very helpful for my 06 H3...
http://www.dragtimes.com/video-viewe...55eeIM&feature

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