Join the community and post your question. Use our Ask-A-Tech for free now! ASE experts standing by.

Forum > Smog Check Repair > Question

Chevy Silverado 1500 Trouble Code PO442 Gas Cap Replaced

2003 Silverado 1500 Trouble code PO442. I replaced the gas cap, but the EVAP monitor won't complete. I got a new gas cap and my code reader give's me a incomplete on evap system. this trouble code PO442 has not returned however.
Answer:

The EVAP monitor might take some time to run and set. Insure your gas tank is always (and only) 1/4 to 3/4 full until the monitor runs. It could take up to 300-400 miles, and 1 to 2 weeks of driving until it shows ready. We recommend driving in a variety traffic conditions; freeway, city, stop-and-go. Avoid sharp turns and hills. posted by SmogTips Support

Related questions and answers you might find useful:

How Do I Get a Smog Check Waiver? by Margaret

Do I Need a Smog Check This Year? by Joy

Mini Cooper DMV Registration Due in 5 Day Won't Pass Smog by anne

2001 Jeep Grand Cherokee Laredo with K&N Air Filter by David

1995 BMW M3 Gross Polluter High HC & NO @ 15MPH by Jared

View SmogTips.com in: Desktop / Mobile