How do I open the blower housing to see if my fan is hitting the housing?

1999 GMC JIMMY
19,000 MILES
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A1BIKER
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Fan runs until I hit a bump, or turn a corner. At that time it starts to drag and makes a grinding noise. It slows down considerably too. I thought a bearing was gone, but it may be just lose and hitting the housing.
Nov 2, 2011 at 1:47 AM
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JACOBANDNICKOLAS
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I attached a picture.
Image (Click to enlarge)
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Nov 2, 2011 at 1:51 AM
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