2000 GMC Sierra Repair Question
Topics covered: Heater, Blend door, Door.
Mileage: 200,000 miles.
Mileage: 200,000 miles.
Asked on March 4, 2013
GMC Sierra Heater Problem
Heater doesnt blow hot air just warm air. hoses are all warm. its running at proper temp what could it be
Asked by (pending member)Answer
Replied on March 5, 2013
i would suspect a restricted heater core or a blend door issue.,