Duramax Lifetime Supporter
Join Date: Nov 2019
Location: South Georgia
I am on a road trip that started in south Georgia and I am on my way to Shiocton Wisconsin. I am towing an 18 ft flatbed trailer with a light load. 3000lbs including trailer. There are no mods on the truck. I am half way through my last tank of fuel.
I stopped at rest area and when I started the truck everything appeared fine. I saw the check engine lamp come on. I pulled off the highway to check fluids. Not finding anything, I drove on to a safer place to take a look and get my code reader that was packed away.
I came up with these codes:
P0420 three times.
I will attempt to clear the codes with my tool but I think a couple are permanent codes.
I'd like to know if I can continue to drive. Am I looking at a possible breakdown? Or is this just an emissions related issue?
Any information will be appreciated. Getting back on the road in 24 hours.
2014 silverado crew cab 2500 w/t
Last edited by Los1wing; 11-30-2019 at 07:53 AM.