I need a serpentine belt diagram for a 2005 chevy 3500 express van

There is a spring loaded tension pully that needs to be depressed. I believe is has a 1/2 inch square socket female end on the front of tension pully that you can use a 18" or 20" breaker-bar to get leverage to reduce the tension. Reduce the tension remove belt and just reverse the process to install new belt.

There should be two bolts at the bottom and two at the top of the shroud to remove it. There should also be a diagram of the serpentine belt located somewhere under the hood or by the hood latch.

Hi, go to www.accessdayco.com click auto/light truck, enter van info, click serpentine routing.

Check this diagrams (click for zoom)...



Fig. Accessory serpentine belt routing-2004-05 5.9L Diesel engines with A/C





Fig. Accessory serpentine belt routing-2004-05 5.9L Diesel engines without A/C

Hope helps (remember rated this).

WikiAnswers says you should be able to obtain a diagram from your local parts store.

http://www.ehow.com/how_4506124_replace-serpentine-belt-chevy-silverado.html

DRIVE BELT DECAL SHOULD BE UNDER THE HOOD.OR YOU CAN GO TO DEALERSHIP GET ONE AUTO ZONE OR ADVANCE AUTO PARTS CAN GET YOU ONE.OR YOU CAN BUY A HAYNES REPAIR MANUAL IT HAS BELT DIAGRAM.

Illustration 7-4 http://www.daycoproducts.com/daycoweb.nsf/Serp%20Rout%20Guide%20Illus.pdf

for the most part you use a breaker bar lift up or push down on the belt tension and remove the belt and do the same thing to put the new one on and there should be a belt diagram under the hood if not give this website a try www.webcrawler.com Merry Christmas and Happy New Year as alway wish you the best of luck Michigan Man.

454 with ac and a.i.r.