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The most common reason for the heater not to blow hot air is that the radiator fluid is low; Check that first. Then check the heater hoses for kinks or blockages (the hoses must be removed to check for blocks). Another possibility is that your cabin air filter is completely blocked (unlikely, but easy to check, so do so). It is also possible that the airflow damper(s) under the dash are malfunctioning, so, failing all else, check that as well.
What else can I help you with?
1998 Oldsmobile cutlass heater will not blow hot air?
May be a defective thermostat or heater core
Why would a thermostat run hot and the car heater blow cold air?
Insufficient amount of coolant or thermostat not opening
Heater does not blow hot air in 1996 Cavalier?
replace anti-freeze, replace thermostat
Why does 1999 grand am not blow hot air when heater is on?
Because your thermostat is probably stuck open
What can you check as to why 99 Oldsmobile Silhouette will not blow hot air for heater Changed and flushed collent and replaced thermostat already Switches seems fine?
How did you change the thermostat?
Why does your 1999 blazer's heater only blow hot air at higher rpm's?
The thermostat could be stuck open.
Why does your heater blow cold air while idling but blows hot air while driving?
Low coolant, failed thermostat, partially plugged heater core...............
Heater does not blow hot all relays are good?
Check the thermostat or heater core
What happens if you do not use a thermostat?
Running a vehicle without a thermostat will cause it to take longer to warm up and your interior heater may not blow hot air.
Why would the heater in a 2000 neon blow warm air but never get hot?
Faulty thermostat. Plugged heater core. Temp blend door malfunction.
Why doesnt my heater blow hot air in my chevy truck?
Low on coolant. Bad thermostat. Plugged heater core. Temp blend door inop.
What would cause the heater on a 1997 Grand Am Gt to not warm up completely and only blow slightly warm air?
It could be the thermostat on the engine. If the engine does not warm up adequately the heater will never blow hot air.
