Heater core is Bad Sounds like your heater core is the problem. you can bypass the heater core for the summer and be okay if you do not want to spend the money (or need the heater) till winter. There is an inlet and outlet hose for the heater core in the engine compartment on the passanger side. Go to your local auto parts store an purchase the correct size hose splice and simply connect the two hoses together. This will allow coolant to circlute through everything except the heater core.
Between the water pump and firewall on passenger side
You can find the 1991 Buick Skylark radiator drain plug on the bottom of the radiator. The radiator drain plug will be in the center of the radiator bottom.
floorboard inside car always wet 1995 buick skylark
Under the hood on the passenger side by the firewall there is a row of four relays. Counting from the passenger fender inward it would be the third.
Check against the firewall on passenger side--plastic cover may have to be removed
Try at the rear of the radiator approx. 1/3 from the top try passenger side mounted to radiator support behind headlamps
It's under the hood, on the firewall, passenger's side, right behind where the alternator is. It's covered by a gray plastic cover.
It uses the cap on the coolant recovery tank as its "radiator cap".
It is located on the passenger side firewall. It is the center of the three relays behind the strut tower.
The 1997 Buick Skylark computer is located behind the passenger side dashboard. You will need to remove the passenger side kick plate in order to access the computer.
If it has a coolant tank, that's the "cap".
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.