I had the water pump on my stock 2006 GXP replaced a few weeks ago, and as the guy who was replacing it was taking the tension off the belt to remove it, his tool slipped and it hit into the tensioner pulley and cracked a chip out of it about half way across the grooves. I didn't know this until last night when I found a crack down the middle of the the belt, upon further inspection found the chunk missing from the pulley. I got a new pulley but am unable to get the old one off, as it takes a special bit which I finally found, but can't get it to budge no matter what I do. I checked with one GM dealership who said the pulley itself can't be replaced, the whole tensioner has to replaced to a tune of like $650.00 including tax. I checked with another GM dealership who said the pulley can be replaced, and would only take about 30 minutes. Has anyone else ever had to replace this pulley. If so, is it at all possible to do the job myself and are there any tips or tricks that may help me? Ideally, I would like to change it myself, just to say I did.
Originally Posted by scottydoggs
