Chevy and GMC Duramax Diesel Forum banner
  • Hey Everyone! Enter your ride HERE to be a part of this months Ride of the Month Challenge!
p20c3
1-1 of 1 Results
  1. 2011-2016 (Non Powertrain)
    Hi guys, this is my first post. My DEF heater went out not long after i got my truck; got lucky, beat the warranty by less than 2k miles. 2 years later (October 2020), goes out again-'Service DEF System', code P20C3. '99 miles until 65 mph' countdown begins. Get it fixed at a local shop-1 week...
1-1 of 1 Results
Top