CDL Roofer Posted January 21, 2020 Share Posted January 21, 2020 Good Afternoon, I have a 2017 Mack GU813 roll off.we have a check engine light that keeps coming on. we have had the turbo changed, hoses leaking fixed, and the turbo sensor. the truck runs great. no idle issues, no running issues. it goes when i tell it to and it stops when i want it to. but for some reason, the truck keeps throwing a check engine light. its been back into the dealer 6 times now with no solutions thus far. the light is off for about 2 days or 250 miles or so. then it comes back on. we bring it there. they say they found a small air leak, fix it and clear the code. get the truck back and the same thing happens. can you please give me a hand here? we are trying not to do damage, but we are loosing a lot of work and having jobs stranded. we are trying our best to get it fixed but to no avail. thank you for your inpuit and i look forward to hearing from someone soon. Quote Link to comment https://www.bigmacktrucks.com/topic/60652-2017-mack-gu813-check-engine-light/ Share on other sites More sharing options...
Tanto Posted January 22, 2020 Share Posted January 22, 2020 (edited) Did you buy it new? If so, or perhaps even if not, the next time it comes on, you may want to have the driver or someone call Mack to get the proper diagnostic process started. 800-866-1177 is the number we're told to call for any check engine light or issue. Edited January 22, 2020 by Tanto Quote Link to comment https://www.bigmacktrucks.com/topic/60652-2017-mack-gu813-check-engine-light/#findComment-441098 Share on other sites More sharing options...
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