Heat still coming out but no fan speed work at all. Could this be a relay or????
- Check Fuse#7 (40amp) in PDC under hood.
- Blower Motor could be bad. Can be tested by unplugging, then hooking directly to 12v battery.
- Check the connectors on the front of the heater box for pin damage from overheating. Common problem. There are usually visual "burny marks and meltyness" (author: ratmonkey)
Looks something like this...
Some cut the connectors out and splice all the wires together.
Or just bypass the connector with damaged wires spliced together.
- Blower motor resistor could also be bad.
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