In cold weather, the fuel filter may become clogged by wax naturally present in the fuel. To unclog it, move the vehicle to a warm garage area and allow the filter to warm up.
The fuel filter may need to be replaced. See Fuel Filter Replacement (Diesel).
At temperatures belowC (32 F), it is recommended to avoid using biodiesel blends above 5% blend.
This blend may cause fuel filter plugging, system gelling, and freezing that may affect vehicle starting. You may need to turn the ignition on and off a few times before the vehicle will start. Also, idle the vehicle for a couple of minutes before accelerating.
Biodiesel
Water in Fuel (Diesel)#13-00-89-003: Vehicle Software Enhancements - (Mar 27, 2013)
Subject:Vehicle Software EnhancementsModels: 2014 and Prior GM Passenger Cars and Light Duty Trucks The new technology systems on today’s vehicles may have software enhancements availableto add additional functionality after the vehicle is produced. To meet customer expectations,GM may make th ...