Cadillac: Strange problem for 92 Coupe DeVille, coupe deville, blower fan

Question
It sounds like it's coming from the left side.
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The text above is a follow-up to ...

-----Question-----
I'm about to buy a near perfect 1992 Coupe DeVille with 79,650 miles. What's troubling me is the fact that a fan for the AC system I think won't turn off when I shut the car off during the test drive. The owner is puzzled by it too, since this is the first occurance he's known of it. We tried unhooking the battery, waited 30 seconds and then reconnected it, but it turned back on. Please help, as I would really like to buy this car without having to spend a huge amount of cash, figuring out what the hell is wrong with it.
-----Answer-----
left and right cooling fan is determined by sitting in the drivers seat. Which fan continues to run ?. Right or Left ?.

Answer
If your referring to the blower fan for the air conditioning system that blows air into the passengers compartment you need to replace POWER MODULE which is located just above the blower fan and about 4 inches to the left as your standing in front of the car.

The blower motor is located behind the engine on the firewall.