2017 gmc canyon equipped with diesel engine will sporadically shut-off while operating when driving with a tank that is less than 1/4 full. on 1/31/19 (odometer ~14200 miles) vehicle was driving fine with an ambient air temperature of roughly 0f, fuel tank at 1/3, when all of sudden the engine died in traffic with no warning. vehicle then needed to be towed to the dealership for service at which point they couldn't find anything wrong with it. again on 3/4/19 (odometer ~15100 miles) vehicle was driving fine when the dash lit up with multiple codes and truck went into reduced power mode, ambient air temperature 10f gas tank at 1/8th. got out of truck and it smelled like it was on fire. called to have vehicle towed to dealership. vehicle kept for multiple days at dealership, dealer worked with gm to identify an issue and no fix was found. dealer called to instruct me to not drive the vehicle with less than 1/4 tank during winter and also mentioned that this has been an issue with a few other canyon and terrain diesel models. gm needs to find a fix for this! it is totally unsafe and unacceptable to have a truck that will unexpectedly loose total power when driving due to a design flaw in their systems.