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I have 2006 Blazer. Antifreeze needs to be at right level or no heat. Instead of changing my thermostat for very cold temperatures I use a grill snap on guard that adds plenty of heat to the cab and is adjustable. Gasoline will not burn well if the engine is too cold in severe winter driving. If you are losing at lot of antifreeze use the copper sealer and not the aluminum sealers.

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โˆ™ 2008-04-05 05:09:04
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Q: What would cause the heater not to work in a 2000 Blazer?
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Where can you find a heater -vacuum diagram for a 2000 S10 Blazer?


How do you replace the heater core in a 2000 Trailblazer?

They did'NT make the Trailblazer in 2000 might you be looking for information for a 2000 Blazer.

Why does heater still not heat up on 2000 Chevy blazer after flushing and changing termasate?

Heater Airbound? Heater control cable not working? Heater core plugged?

Where is heater relay on 2000 blazer?

If you are standing in front of the truck with the hood up, it is in the back left corner to the right of the heater resistor.

What would cause a gurgling sound from the dash when accelerating in an 2000 S-10 Blazer?

Check the coolant system to make sure you are not low. An air bubble going through the heater core can make an odd sound.

Does it hurt to swap inlet and outlet hoses on heater core in a 2000 Chevy blazer?

No it will not, it will just back flush the heater core and clean it out.

Where is the heater control valve on a 2000 Chevy Blazer and what does it look like?

this model does not have a heater control valve, it has a specail thermostat that controls flow.

Can you cut through the firewall to replace the heater core in a 2000 Chevy blazer?

You can but you still won't be able to get it out.

What would cause a 2000 Blazer not to change from ac to heat?

The most common problem causing a 2000 Blazer to stay on heat is a problem with the blend door. Check the blend door and its control circuit to fix the problem.

Where is the vacuum line for the heater blend door on a 2000 Chevy blazer s- 10?

The heater blend door is not run by vacuum. It is run by an electric actuator.

What would cause a 2000 Chevrolet blazer's transfer case module to go bad?

Corrosion. Check connection at the module for corrosion.

Your 2000 blazer started blowing out air that was not warm when the heater was on. It started working after about 15 minutes.?

I am having the same problem.. I have already had to replace the intake manifold gasket cause it was leaking, still no heat. We will be flushing out the heater core to see if that's the problem. I may have to replace the heater core, we will see.

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