4.8is ... completely resting on front tires... Problem????

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I have been noticing lately that the front of my truck after being parked for a couple of hours is pretty much completely slammed and sitting on the front tires. I can't even get a finger in the wheel well.

However, when I unlock the car or turn the key in the ignition if the truck was open it raises back to standard setting.

I have noticed the suspension appears to be very stiff... as in no give what so ever when I try to push down on the front fenders/hood etc.

Have any of you guys experienced this? I don't think it is normal because I haven't noticed it before on my 4.8is (2004 only 33K miles).

any suggestions?

Thanks.

Curtis