Did you know that the heater is actually engineered to help cool your engine? The center of every automobile heater is actually a heat exchanger identical to your own Gmc G25 heater core. The part is nearly like a radiator in your cooling system. This functions to receive hot coolant coming from the engine into its inlet and uses the attached fins to magnify heat transfer onto the air. This can warm the passenger cabin and also cool the engine.

Generally, the Gmc G25 heater core is situated at the back of the dash. First part you'll observe is the fins that are connected to brass or aluminum pipes. A typical heater core has an inlet and outlet for accepting and flowing out coolant. The particular quantity of warm air that is sent in the cab is generally controlled with a switch tab on the dash.

Over time, your heater core will get damaged. You don't actually have to endure poor efficiency or even upgrade the entire system to recover your Gmc G25 heater core functions. All you've got to accomplish is find a direct replacement unit for this part coming from OES Genuine, Vista-Pro Automotive, or Replacement ; they're offered here at Parts Train!