Close
Q:

heater on 1990 Buick LeSabre

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
heat blowing cold air
(1) Answer
check coolant level first. make sure the thermostat is operating correctly and lastly, the heater core may be clogged from debris in the system.

Roy