Climate Control Fuse 48 Blows

[shark88]

It has blown the fuse 3 or 4 times on me just pulling out of the neighborhood so I can probably rule out the full throttle cut out. It can go 3 - 5 days and work fine. I drove it to work all last week, 140 miles ea day and it blew Wednesday morning a few miles from home. I keep coming back to the aux fan and it's erratic 2 or 3 bumps before it spools up to a constant speed, Does anyone else's 3.0 fan operate like that?

To expand more (and add to the mystery), the first time it did this the wife was driving on the local perimeter hwy doing 65+ when she had to slam on brakes for someone who had come to a complete stop! I've had it blow 3 times just easing out of the neighborhood in the morning and last Wednesday's event on a 55mph hwy close to home. I have gotten in the habit of turning the snowflake button off before shutting the ignition off and waiting a minute when I start the engine before turning the snowflake button on. This has not resulted in any blown fuses.

Thanks