Well this question has to do with my 96 Buick Skylark. This problem suddently arose after letting the car sit all winter and not driving it. The fan speed does not work on the HIGH setting, it works fine on all 3 lower speeds, but as soon as I switch it over to high, it shuts right off. Another thing I noticed is that when this happens, the “air bag� light will start flashing 7 times, just like if you turned the key to the ignition position when starting the car. Also, the interior light gets a tad brighter when in the “high� position, so I am assuming it is not shorting out. Any ideas on where to start diagnosing this one?

i'd have to guess it's the connection on the high speed setting. I'd start there.

yeah i got ahold of my service books and traced it back. There are 2 seperate circuits for the blower, one for the three low speeds, then a 30 amp dedicated supply for the high setting. It ended up being that high speed relay was bad. Swapped it out and now its fine. I have no idea why the air bag light was going on at the same time, but it hasn't done it since!

where do you find that relay - have the same problem on my 92 Olds 88