Drain the radiator. Remove the 91 Centurys top radiator hose. Unbolt and remove the top water inlet on the engine. Pull the thermostat from under the housing. Install the thermostat, a new gasket, and reinstall the inlet and top hose before filling the system with new coolant.
The thermostat on a 1991 Buick Skylark is located near the engine. To find the thermostat, follow the top radiator hose directly to the thermostat.
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
Dextron 3
In a removable housing at the engine end of the upper radiator hose
My Chilton's Auto Repair Manual shows : For a 1991 Buick Century : ( 15.7 U.S. gallon gas tank )
replace starter