The petcock is at the bottom of the radiator on the drivers side of the car.
The petcock on a 1989 Chevy Celebrity is at the bottom of the radiator on the drivers side.
The drain is near the bottom of the radiator on the drivers side of the car.
The thermostat on a 1989 Chevy Celebrity is located under the water outlet fitting. Follow the upper radiator hose, it will end at the water outlet.
The oxygen sensor on a 1989 Chevy Celebrity is located in the rear exhaust manifold on top about the center.
The 1989 Chevy Celebrity V6 is rated at 130 hp.
The spark plug gap for your 1989 Chevy Celebrity 2.8 V6 is .045".
Looking in my factory service manual for a 1989 Chevy Celebrity I found no reference to an accessory relay.
The radiator drain plug on a 1989 Chevy C1500 Silverado is on the bottom of the radiator.
There is no fuse on the alternator.
on the side of the transmission
No Chevy Celebrity ever had a 4.0L engine
Possibilities: Cooling fan not working. Low on coolant. Clogged radiator, radiator hose or block.