GM pickups powered by a Duramax diesel engine offer loads of benefits, including strong low-end torque and impressive real-world efficiency. However, diesel engines also require some specialized ...

Diesel exhaust fluid (DEF) is nothing new. GM’s Duramax-powered Chevrolet Silverado and GMC Sierra 2500HD and 3500HD pickups have had used the stuff since 2011. So has Ford’s F-Series Super Duty.

Duramax DEF troubles leave truck owners stranded Duramax diesel owners are increasingly reporting Diesel Exhaust Fluid (DEF) system failures that trigger limp mode and long waits for replacement parts ...