So I don't post often, but here's my rant. I have an 02 Grand Prix GT (original owner). A couple of years back I replaced the intake manifold gaskets on my own with the aluminum type. Lately I have an external coolant leak and decided to trust in a mechanic since it's literally 5 below zero here right now and not worth freezing over. The mechanic calls me and tell me it's leaking at one of the plastic bypass tubes so I tell him to fix it. He then tells me that my tensioner is full of junk and should probably be replaced. I put faith in him and tell him to do it. $391.00 later, I'm driving the car home and notice the low coolant light comes on. The guy didn't even bother topping the coolant levels off. Next day I'm taking my kid to preschool in -5 degree weather and the motor dies. I think I've got a bad battery or something. I feel around and notice the mechanic didn't bother plugging back in the voltage regulator connector on the alternator. On top of all of this, I'm certain I'm still leaking coolant. No wonder why I don't trust mechanics. Has anybody really ever had to replace their belt tensioner? He charged me $220 of the $391 on the tensioner. Thanks for listening to me rant!