a 1991 buick skylark has 4" speakers in the dash and 6x9's in back
The PVC valve for a 1991 Skylark should be located on the top of the valve cover. It is a plug in type, twist and pull to remove.
how do you replace a ignitionswitch tumbler 1991 buick skylark
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.
where does a clutch relay seleniod go in at on a 1991 buick skylark
I'd say about 2.5 tons.
If it has a coolant tank, that's the "cap".
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.
Under dash with fuses. Very hard to see.
Probably a worn-out or clogged heater core.
Either a 2.3/2.5 4cylinder or a 3.0 V6
a round one that you can order online