You can also call someone that sells alternators, and ask how to test the regulator yourself. I know there is a way to jump power to one of the pins on the ALT, and this puts it under load. If you notice the alt working harder the regulator is not sticking. But for accurate results, you should do this when the truck would normally exhibit this problem.
Yeah I know... I wish that was the case all the time! But for me, it worked after driving about 5-10 miles. Once it kicked in it stayed working. But I was told by my alternator salesman that they "stick sometimes." And replacing mine fixed it for me. I am just giving an opinion though. And I have an 01, so I don't know how everything works.
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