If the heat isn’t working or isn’t as hot as it used to be, your vehicle could have a clogged heater core. If there are no signs of a coolant leak, a full coolant level, and no signs of disruption in the flow of coolant, flushing out the heater core may fix this problem. This post explains the importance of a heater core flush and how to flush the core yourself.
How to Flush the Heater Core Yourself
