I need a picture/or diagram of the serpentine belt routing on a 1998 Cadillac 4.6l north star engine. Car is a De ville

I found this picture, it didn't say northstar. The tensioner in picture has a half-inch cut-out. Use a 1/2 rachet or break-over in cut-out, usually the longer the handle, the better. You pull the tensioner one way or the other to get slack in the belt, then remove belt from accessory pulley.

http://www.fixya.com/cars/t4749862-north_star_belt_diagram

okay, let me try to help you, its a 1989 eldorado 4.5 engine. here you are a diagram of the belt routing, hope this helps . good day.

Below is the master help link provided to go through belt routing diagram:---Timing belt, drive belt, serpentine belt, accessory belt, fan belt, engine belt routing diagrams for all types of car models?
Click the link below: ----

http://carbeltrouting.blogspot.in/2012/02/timing-beltdrive-beltserpentine.html
----------This will help. Thanks.

there should be a white decal on the upper rad support bar that shows you the belt routing,in not then draw how the belt is routed before you take it off the car.the parts store may have a routing diagram,if the belt broke then if you know someone with the same type and engine size maybe they will let you look at the belt routing.you can also go to the library and take out a book or draw the routing from the book for your car.

http://www.google.com/search?client=ubuntu&channel=fs&q=northstar+belt+diagram&ie=utf-8&oe=utf-8

Northstar belt routing diagram.
This diagram should also be on top of your engine somewhere, usually on the plastic cover on the radiator.

CLICK on the following LINK. It has all the Diagrams for your Belt that you will need.
If you would: Before Clicking let me know if this helped you, or if you have any additional information or questions. Feel Free to contact me at FixYa.com!
Thanks!

http://www.2carpros.com/car_repair_information/year/1994/make/cadillac/model/deville/1994_cadillac_deville_drive_belt_routing_diagram.htm

To gain access you have to remove the ignition coil pack. There are only 4 10mm bolts holding it on. Also remove the cross over to have more room.

You didn't list your motor size so please pick the applicable diagram:


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Accessory serpentine belt routing—5.7L engines without A/C


Accessory serpentine belt routing—6.5L Diesel engines


Accessory serpentine belt routing—7.4L engines


Accessory serpentine belt routing—8.1L engines