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I was wondering if there are any websites related to Blazers/Jimmys that would have things like recalls, maintenance suggestions, how-to's (like, for example, how to change the Serp belt, which my dealer charged me $120 to do.), parts lists, common problems, FAQ's, etc. Anything would be helpful. Thanks in advance...

Go to www.chevy.com and become a registerd member. If you fill in all the blanks including your vin number for your truck, you can get all kinds of information. Including what your looking for. Also you can go to any parts store in town and get a Haynes manual for your truck. That will give you all kinds of How To's.