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Anonymous Posted on Dec 21, 2017

Code P0442 2003 GMC Sierra

Evap light will not reset? Keep taking it in to smog center and the evap light will not register on the scanner? Have driven a total of 180 miles since gas cap was replaced and the computer?/Evap will not reset on the truck even though the check engine light has not come back on since the replacement of the cap.

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Geo P

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  • Posted on Dec 21, 2017
 Geo P
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Are you located somewhere cold? some vehicles will not allow the evap to run its cycle under cold conditions, you shouldnt have to drive more than 180 miles, but you might have too. If you can take it to a heated garage and run it it might help

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emissionwiz

Marvin

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  • Posted on Oct 08, 2009

SOURCE: 2003 gmc sierra: changed gas cap,solinoid at gas

what is the trouble code you have please?

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