How does the heater work on a GMC Savana?

How does the heater work on a GMC Savana?

At the simplest level possible, the heater works by passing hot coolant from the engine into a tiny radiator called the heater core. At this point, the blower motor blows air across the it and the newly heated air blows on to the driver and passengers. If the heater has stopped working in your Savana, this process has failed in one way or another.

Why is my heater not working on my Savana?

Anytime you’re putting your hand around the radiator or fans in the engine assume that they are hot and that the fans can kick on at any time, even without your key in the ignition. While not having enough coolant may make your engine run hotter, it can also cause your Savana to not be able to create enough heat.

Why does my GMC Savana Van not start?

Lately I have had this problem: Go to start the van and if fires up for about one second then quits. Try and try it will not start. Dealer at first said it was the fuel pump. Replaced it. Months later still doing the same thing.

Is the Silverado 1500 AC blowing cool air?

I have a 2001 Silverado 1500 with the 4.8L engine. The AC works fine but the heater only blows cool air. We just replaced the thermostat and it still doesn’t work right.

Why does my GMC Savana have no heat?

One of the most common (and inconvenient) problems with the GMC Savana is when it has no heat coming from the heater. Not having a functioning heater makes driving much less comfortable, and can be a sign of certain issues. At the simplest level, there are two main reasons why the heater is not working.

When did my GMC Sierra air conditioner stop working?

I had a 2001 GMC Sierra that did this when truck was less the one year old (summer of 2001 is when it was). The dealer had the truck in the shop idling for a long time and the A/C worked perfectly. I told them to take it for a ride and see. So the service manager in an effort to convince me nothing was wrong went for a ride with me driving.

What causes hot engine but no heat from heater?

When the engine is warm feel both heater hoses. If one is cool and one is hot then you have an obstructed heater core (or a bad heater core valve, if it has one. some vehicles use a mechanical valve to turn the coolant flow on and off to the heater core).

Where are the Heat Hoses on a Silverado Sierra?

The hoses are easy to find they are on the left side of your engine compartment going through the firewall near what would be the back side of your glove compartment. If your engine is hot and the heat is on, both of these hoses should be warm or hot to touch.