Problem: rattle between dash and windshield, mostly in cold weather when going over bumps, road expansion joints, etc. Dealer quoted about $1200 to remove dash and reinstall with some new clips. Car is out of warranty.

Parts to fix: 1 piece of craft felt, a square foot of it. Color not important. 50 cents. I clean putty knife that is NOT sharp (a plastic one is great).

Cut: Felt into a few 3 inch wide long strips, then fold lengthwise, in half.

Insert: Felt into area between dash and windshield with putty knife, pushing into the fold, until felt disappears from view (this is why color doesn't matter)

Drive: the car a bit to see if you fixed it. If not, put another strip next to the one you did, or another one on top of the one you just did.

Worked for me. Clean, cannot see the felt, easy.

 

Been meaning to do this for a few months now. You just motivated me to go out and get some felt.

 

That helps a tad bit, the other noise which is referred to as mice squeaking is from outside of the car, The big plastic piece under windshield wipers, I stuck bunch of felt in there, you can put a small knife and wiggle you will hear same exact noise.