Hey guys, quick couple questions. I have a 05 envoy w/65K miles. Planning on going on a trip here soon and I wanted to change the serpentine belt before I go. Parts store told me that the v6 has two different belts depending on which alternator you have. Without having to take off the belt, is there anyway of knowing which belt and alternator I have. I guess, my last question is....if I have the lower output alternator, will the higher output alternator fit in my envoy using the same mounting points....so if I wanted to upgrade it, would I have to buy any extra parts to get it too fit?
Last thing...I see a lot of threads talking about dimming headlights. Has anyone put a grounding kit on too see if it works...it did work in my 03 Nissan...it was having the same problem. I have the dimming issue in my Envoy but I haven't tried the grouding kit...and it's never really given me problems. Just a thought....Thanks

Last thing...I see a lot of threads talking about dimming headlights. Has anyone put a grounding kit on too see if it works...it did work in my 03 Nissan...it was having the same problem. I have the dimming issue in my Envoy but I haven't tried the grouding kit...and it's never really given me problems. Just a thought....Thanks