Your front heater ac blower stoped working rear blower works fine what would be the problem on a 02 durango all fues are good?
check to see if you have fire to the motor with a test light.if you have fire there it's the motor if not it could be a relay or the switch. also check the heater motor resistor (bottom of heater box, front passenger side, left foot area) I have replaced 2 on mine in 30k miles. first time failed only the low blower setting worked, second time I had nothing. its a dealer item, about 12 bucks, simple install.
The blower on your 1999 DeVille heater stopped working how can you determine if it is the blower or the control circuitry?
Why would a heater AC blower stop working on 1st and 2nd speed first and stop working on 3rd and 4th speed a year later?
If a 2000 Grand Am sometimes has the heater blower working and sometimes it won't, the problem could be with the heater relay switch. The heater relay switch lets the heater blower know when to come on and when to go off. In most vehicles this switch is behind the glove compartment. This part sometimes gets corroded from condensation in this area.
If the heater stopped working in a 2001 Chevy tracker do you have to replace the heater core or blower motor or both?
Could be several things. If the blower works on A/C or vent it is good. If the Heater core is not leaking (due to corrosion, which is a common problem) it is probably good. Could just be the Temperature cable is off the the blower door not allowing air to pass over the heater core. Just to name a few..........