SOURCE: 1992 cadillac deville - hvac blower motor does not shut off.
replace the relay , when a relay sticks like that , a good test is to slap it with something like the handle of a screw driver , see if it un-sticks , its not a fix , just a test . cheers'
SOURCE: Lincoln 2000 town car Blower doesn't work at HI-MED-LOW speeds...
it is called blower motor resistor , should be close to blower motor , you will see a plug type connector with two screws , remove the screws and there should be a resistor inside the cover for the motor, swap with new and reassemble
SOURCE: 1999 GMC Yukon - Blower only operates on high. I
on these models on the harness that plugs into the fan switch goes bad, I changed the switch and found this harness melted together on my 99 yukon
SOURCE: 2006 Hummer H3 a/c & heater fan/blower failed
Probably too late now, I am sure you have already fixed it, but mine did this and it was an electrical part that is mounted right beside the blower fan. The part was OK, but the plug into the part was arcing and burned out the connection. A Chevy mechanic told me this has been happening to MANY Chevy products. I had to buy a new part and plug assembly with new wires, about 100 dollars, and I spliced them together. It was an Easy fix, but I shouldn't have had to do it :(
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