every now and then when i turn my truck off there is this clicking noise , sounds like it is coming from around where the blower is . it clicks for about a min or so then stops . I was wondering if anyone had any ideal what it could be and how to fix it. thanks for your advice.

 

HVAC fan spinning down? Or possibly the exhaust ticking..?

 

If it is several fast paced clicks that sound like they are coming from the passenger floor board is probably the blower door for your HVAC fan. Happened to my '94 yukon.