Ok, Hoping someone can shed some light on this topic. Yes, I read the post on parking break fixes and none of that answered the question. I have replaced the parking break shoes, parking break hardware then adjusted,replaced both left/ right cables and the intermediate cable. I have taken the truck to two different reputable shops and had them look and adjust as they seen needed. The truck will not hold in neutral on a slope greater than 10-15 degrees, it just wants to wander down the hill. I even did the hold the break release and pump the parking break pedal trick. I have considered putting new rotors on and even replacing the entire break pedal assembly. I just do not want to throw away money. Look forward to hearing back from everyone. Note the truck will hold on a gradual hill and I can put in in drive and reverse and you can feel it holding.