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It sounds like you may have a malfunctioning component in your heating system that is causing the fan to continue running even when the car is turned off. Pulling fuse 47, which controls the climate control blower and ignition 3 relay, stopped the fan from running but may have also caused other issues in the system. Replacing the fuse may not fix the problem, it may be necessary to have a mechanic diagnose and repair the specific component causing the issue.
Does the car have a climate control system? Could be the heater/AC control or the associated sensors have a problem.
The other required part of the system are the heater resistors. These allow for speed control. They could cause intermittent behavior, but would never cause the fan to run all the time.
I have the same problem! My buddy told me the problem is in the climate control. There is a resister that is not working properly, you have to replace your climate control. If you don't know where that is, it the thing you see below your stereo, lol! You can pick one up at an autowreck yard for cheap and to change it out is easier
I have the same problem on a 1988 lesaber Climate control and was told to change the climate control as the was the problem. A have the climate control but have a problem to take of the cover that covers the control and the radio. If any one can tell me how to remove it I will put in the new control and see if that will stope the fann.Thanks
Ok it may be that the heater core bypass valve isnt opening. All that valve dose is when you turn the climate control to heat it opens a valve that allows hot coolant from the engine to flow through the heater core. What I would do is check that. It will be on the left side (passange) of your engine bay.You will see two black coolant hoses next to eachother and one will have a black box with a wire that runs to it. Have someone move the climate control from hot to cold to hot back to cold. If you dont see the wire move then you can move it yourself to open the valve.
Let me know if the valve opens or not using the climate control.
there is a blower motor control unit under the hood on the right side near the firewall, unplug this and it should stop running. normal problem for a lot of gm cars with electronic climate control
It is either the climate control module or the AC Heater temperature. control door motor. The module has self test capabilities, have a self test run on it before you start replacing parts.
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