Home Forums Gear Hunting Trucks and Four-Wheel Drives DEF question

My new Chevy Duramax manual says that DEF additive freezes at 14 degrees F ,and it would need to be taken into a warm garage until it thaws.My garage is unattached and not heated. Will it thaw once the truck is warmed up from running.The DEF reservoir is under the passenger side frame?.Here at 7650 feet elevation, winter temps hit below that frequently.

What is the solution to this problem? Thanks