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  1. Def fluid level jumping

    Colorado Diesel Mechanical
    I just got my 2020 Colorado 2.8 I have 762 miles on it currently I’m on my third tank of diesel my DEF fluid level has been reading at 100% except for one time about 100 miles ago it read 86% and just now it dropped to 82% but five minutes ago it was at 100% has anybody else had an issue with...
  2. Anyone with these emission problems?

    Colorado Diesel Mechanical
    Hi, new forum member & new Colorado diesel owner. I took ownership of a Z-71 4 door short box in November (2019 model year). It has been a great truck with the exception of some emission related issues. I will explain the situation and see if anyone else has experienced the same issues and...
  3. Looking to delete and tune my 2018 2.8l

    Colorado Diesel Tuning
    Hey guys I've had my 2018 GMC Canyon with the duramax for about 4 months now. It has 11000km on it now. Already one dead maf sensor it was covered in diesely soot. That was at 8000km. But anyways looking at that intake pipe it's filled with garbage from the EGR. I want to delete the EGR and dpf...
  4. DEF sensor flipping codes

    Colorado Diesel General Discussions
    I have a 2017 Canyon 2.8. It has 17000 km. I have flipped the LOW DEF code when the tank is not low 5 times. 1st time cleaned the sensor (Summer) 2nd timecleaned the sensor. (Fall) 3rd time replaced the sensor. (Fall) 4th time did a GM upgrade. (winter) 5th time .......(winter) still...