I now drive a 2005 GMC Canyon, and love it! Of course, it is a big change from the '03 Silverado 2500 that I was driving. Trying to get used to a smaller bed with less capacity has been a challenge to say the least. You should have seen me trying to carry a truckload of 2x6x16's the other day down the NW Expressway here in OKC! Redneck to say the least!
Well, my water pump started to leak the other day, and was making some pretty rough noises, so I went and got the $50 water pump, and decided to change it on Friday evening. The water pump is completely different from any I have ever seen. . . of course, the truck is a little different too. It has a 3.5L inline 5 with plenty of get up and go. The water pump was about 7" from front to back with a diameter of about 4". There were no inlet and outlet connections, which I thought was very odd, but rather, the impeller is out in the open, and it appears that the impeller uses the actual engine to direct where the coolant goes. It was pretty cool. The only downside was the fan nut, which is a 36mm nut, which only has room for an extremely thin wrench to get in to break it loose. The Auto Parts stores sell a special wrench to be able to do this, but they only want about $60 for it. More than the water pump. . .really GM? I'd never use it again, so I spent about 3 hrs trying to get that stupid nut broke loose! I got it, and it cost me nothing, but a little bit of time. Overall, it was a pretty simple job. Much easier than I would have expected, and definitely much easier than other water pumps that I have replaced!
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