Changing the cylinder lock is fairly easy and is the same on most vehicles.... but you typically need the key. First, you take off the lower steering column cover. You should be able to see the bottom of the cylinder lock now. You insert the key and turn it to the "run" position, and there will be either pins or screws that you push or remove and the cylinder will slide out. Again this method will only work with the key.
The fuse box is located in the glove box on 1991 Buick Century
yea it should
My 1991 Buick Century won't move or hold transmission fluid
How to change brake lines on a 1991 Buick Lesabre?
Yes, on Buick Century 1991 you need to replace the whole hub, it is much easier than replacing individual bearings.
The oil capacity for a 1991 Buick Century 3.3 is approximately 5 quarts. The recommended oil type is 10 W 30.
Drop the tank, remove the retaining ring and replace the module. Do the filter also at the same time
Counter Clockwise
Dextron 3
If it is 3.3 liter engine it's a bit difficult. I had a 93 century I'm sure engine design didn't change much... Requires a 3/8's ratchet and spark plug socket with an extension. How I did mine was placing the socket/extension on spark plug then ratchet. Just have to reach back there and get your hands dirty
replace starter
My Chilton's Auto Repair Manual shows : For a 1991 Buick Century : ( 15.7 U.S. gallon gas tank )