Pete 387 door noise

Can't help you there but i have just taken delivery of mine and it has the same problem, i have the 3 month "any rattles and shakes" warranty whereby i can take it in to be fixed, i will update asap.

 

KW coulednt fix it on the T-2 either, sorry to say its not gonna get any better

 

2 things to try:

1, When you open the hood, there is a trim panel, just ahead of the door, about 6 inches wide, at eye level, try tightening that up.
2, If you have the hood that is secured shut by 2 cup type things ( ie. Not rubber straps) try putting some well greased cloth in the cups so the "pins" don't rattle inside them. (the "pins" are large and look like half footballs)

Worked for me although i still get a little rattling noise.

HTH's

 

I used to have a 387 Pete and had the same problem. Believe it or not, what was causing the rattle was the pivot point on the break-a-way mirrors. Every so often, I would fold the mirror in and take WD-40 and spray in between the pivot point of the mirror and then just work it back and forth a little. This worked for me. Hope it fixes yours.

 

The little round cover on the mirror pivot fits loosely on mine and rattles. I shoved a balled up piece of duct tape uner the one on mine till it gets warm enough to snap it off and put some silicone or something under it. My doors make a terrible wind noise and shake up top in a heavy sidewind. Peterbilt tried to tighten them up 3 times with no luck. No air leak just terrible noise. The wind might get in in that panel in front of the door so I am going to try to put some foam in there. The noise is worse than any Freightliner I have ever driven. Really disappointed in this truck because of this.