0
The thermostat might need to be replaced.
or the coolant level mite be low. it is a sign that it is. and also the type of coolant used if not flushed and replaced tends to clog the heater core. try flushing it out. lastly you have a bad intake gasket and leaking coolant out. 4.3's are notorious for this.
Wiki User
∙ 12y ago
Add your answer:
Earn +20 pts
Air conditioning bracket removal for 2000 Chevy blazer?
Your 2000 Chevy Blazer air-conditioning bracket is held in place with for retaining bolts. Remove the retaining bolts with a 9/16 socket. The air-conditioning bracket will come off.
Why would a 2001 Chevy Blazer heater only blow cold air?
Low coolant in the system. Defective heater control valve. Clogged heater core.
My 2001 Chevy blazer will only blow cold air what can you do to trouble shoot what repair must be made?
My 2001 Chevy Blazer was blowing cold air when I had the heat on. My husband flushed the line to the heater core and a bunch of junk came out and now my heat works great. My 2001 Chevy Blazer was blowing cold air when I had the heat on. My husband flushed the line to the heater core and a bunch of junk came out and now my heat works great.
Why wont your 2000 Chevy blazer blow hot air?
I've got a better question, why is this question in the Chevy venture forum ?
Why would a heater on a 2001 Chevy Blazer blow cold air if the thermostat was just replaced?
The heater valve could be failing to open for one reason or another.
Why the floor air comes on when you haveit on vent setting on 2004 Chevy blazer?
why my floor air comes on when the setting is at panel air on 2004 Chevy blazer
On a 1998 Chevy blazer what would cause the heater to blow cold air?
Check Antifreeze level..make sure there are no leaks under the vehicle.
Why is only cold air coming out when heater is on in a 2000 blazer?
Could be, Stuck open thermostat, Low on coolant, Plugged heater core, Temperature blend door actuator malfunction.
2004 Chevy blazer blows only cold air?
It could be the actuator that diverts the air through the heater core. Our enthusiasts forum may be able to help you more at www.trailvoy.com
Where is the rear window washer fluid pump on a 2000 Chevy blazer?
The washer pump is on the fluid tank under the air filter
On a 1998 Chevy Blazer what would cause the heater to blow hot air then cold and occasionally back to hot?
Either a faulty thermostat or you have a low coolant level.
Why does Heater blows cold air on 2001 blazer?
you must have low coolant or a bad heater core
