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!


  1. General Discussion
    I’m DEFinitely not a happy camper. Bought my 2021 Chevy 1500 3L i6 Duramax with the $20K Black Window package from SCA Performance two months ago. At 2900 moles I got the Service DEF system immediately and CEL. Took it in for service and was told the exhaust temp sensor failed or was failing...