I need a diagram of a 1998 buick century - 1998 Buick Century

SOURCE: Heater/AC Fan does not work in our 1998 Buick Century

Fan will be under dash on passengers side , Removing glove box might be needed, Gm also uses a blower resister ro control fan speeds. First check your fuse and then check and make sure your getting 12 volts to the terminal at the blower, You could have a blown fuse, a bad switch, or a bad resister , if your getting voltage to blower motor then most likely it will be the motor. These are not to difficult to change. I hope this helps, please be aware I can only guess at what the problem is from my past experience.

SOURCE: STEREO WIRE CODES DIAGRAM FO A 1998 BUICK CENTURY

need codes to hook up radio to 1999 buick century

SOURCE: I have a 1998 buick century and the odometer and gear

This is a very common problem. I too have this going on. I found a Edmunds Forum and a poster has a fix, at least for him. Link: http://townhall-talk.edmunds.com/WebX?14@@.ef22120/307#MSG307 and see if this is your problem too. I ordered a new headlight switch. Its an easy replacement too. Remove the left side dash panel, two screws and the 20 pin connector. Hope this helps.

SOURCE: I need a spark plug

Here is the firing order diagram for that vehicle.

SOURCE: I need a firing order

6 and 8 cylinder: