0
Low on coolant.
Bad thermostat.
Plugged heater core.
Temp blend door inop.
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∙ 10y ago
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1999 Chevy Silverado doesnt blow and heat what is the problem?
if it doesn't heat your heater core is most likely clogged and if it doesn't blow at all then the blower is messed up.
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Have you checked your suction lines.
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why doesnt my heater work on my1985 BMW
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When you have the heater on, does it just blow any air at all? or no air?
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Check the following items.................... 1. A/C heater controller. 2. A/C heater controller doors. 3. Check for vacuum leaks and cracked lines.
Can not get the fan to blow on hi on a 2001 Chevy Astro van?
get a new heater switch
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The heater control valve is stuck open.
Why doesnt my 2001 Chevy silverado ac not blow hard?
Clogged cabin filter
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Check your anti-freeze levels
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check heater fan to see if it is working.
Why would a 2001 Chevy Blazer heater only blow cold air?
Low coolant in the system. Defective heater control valve. Clogged heater core.
Why wont the heater blow on your 1996 Chevy S 10?
Likely heater core. I had same problem with 1996 S-10 with 4.3L.
