I presume you are asking about the coolant reservoir on your Chevy Celebrity.
There are several possibilities where you might be able to get one.
You could try your local Chevrolet dealer, they might have a brand new one.
You could look on eBay, items of that nature come up there on occasion.
I would look in a local wrecking yard, you would have a good chance of getting one there.
The coolant fan relay on a 1988 Chevy Celebrity with 2.8L V6 is on the radiator support bracket behind the right hand headlights.
what is the wiring diagram for an 1988 Chevy celebrity stero
To locate the thermostat on a Chevy Celebrity follow the upper radiator hose to the coolant outlet, which is mounted to the top of the thermostat housing.
The fuel pump on your 1988 Chevy Celebrity is in the fuel tank.
The fuel filter in your 1988 Chevy Celebrity is on the driver's side behind the rear wheel next to the fuel tank.
The 1988 Chevy Celebrity uses distributorless ignition. There is no provision to alter timing, the engine control module takes care of that.
100 lb or above
In the fuel tank
The fuel filter on a 1988 Chevy celebrity 2.5 litre FI is located right in front of the rear passenger side tire.
No easily, however, I suppose you could.
The PCV valve on a 1987 - 1990 Chevy Celebrity is in the top center of the valve cover nearest the firewall.
Any Auto Parts Store.