Can anyone help with this problem? If it rains overnight my truck's brakes grab when first applied the following morning. Sometimes it takes two or three stops before the brakes don't grab. Thanks for any help.

I have a 1990 GMC 2500 2WD and it does the exact same thing. I'd say this is a common occurance. Just be aware of any grinding or squeeling noises. This would mean new brakes, possibly rotors if you've waited too long. I wouldnt worry about it.