GM Authority

Here May Be Why Your GMC Yukon Rear Heater Blows Cold Air

GM has released a fix for the GMC Yukon and Yukon XL rear heater blowing cold air. The issue tends to occur while the SUV is at idle and sometimes persists as the engine revs. Affected models include ...
GM Authority

Here May Be Why Your GMC Canyon, Sierra TurboMax Heater Performs Poorly

Some GMC Canyon and GMC Sierra 1500 owners may notice less-than-ideal performance from their cabin heater, in particular with models equipped with the 2.7L I4 L3B gasoline TurboMax engine. The culprit ...