Introduced in 1985, the Chevrolet Safari is a mid-sized van manufactured by General Motors Company. The GMC Safari can suffer from vent problems, resulting in a lack of hot or cold air in the vehicle cabin. Discovering the source of these problems can take a little time and detective work.
The GMC Safari uses plastic vacuum lines to control airflow that are susceptible to breaking due to engine heat. Check the vacuum line that attaches to the intake manifold as well as the vacuum line located beneath the dashboard, and replace any that are broken or showing signs of wear.
The GMC Safari blower motor, which circulates air into the cabin, can malfunction due to a loose wire or a blown fuse. Check for blown fuses and replace them. Inspect for loose or corroded connections, and secure or replace them as needed. If the blower still fails to operate, it may have a bad resistor and should be replaced.
Low coolant may cause lack of air through the vents of a GMC Safari. Check the level of the coolant in the reservoir tank, and top it off if low. Check the water pump shaft seal for wear, the coolant hoses for tears and the radiator for cracks that may cause coolant leaks, and make the necessary replacements.
