Where can you find a DIY repair manual for a 2002 Pontiac Montana?

Auto parts store. The Chiltons and Haynes manuals sold at Autozone, Pep Boys, etc. are of questionable value at best. Spend the extra money (or sometimes less; check eBay) and get the much more complete GM service manual for all "U" Platform vans. You will thank yourself. Sorry I can not find at any part stores a 2002 service manual. try this web site ,,it will cost a little but it is good info http://www.alldatadiy.com/