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i have a 91 deville 4.9 90000mi. when i shut the car off the ac shut off but the blower continues to run. i tried pulling fuses but no luck. i finally had to unhook the battery. even when the car is running and i turn off the ac or heat the blower stays on full blast on my feet.
 

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White Diamond '03 DHS (with DTS floor shift)
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I think it has a blower control module on the HVAC box that controls fan speed. Follow the blower motor wires to it. My guess is that it is bad.
 

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99 Seville STS, 08 STS4 N* 1SG F55
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