The best way to find out is go to your local auto parts store, ask for a haynes or chiltons manual on your vehicle. This will tell you everything you need to know about working on your vehicle.
Look at the spark plugs-- if one has no wire at the top, that is the problem- there should be a wire from each spark plug to the distributor cap.
Check the plug and the wire.
Do you have a wire that goes to the top of the engine then yes you have a spark plug
Remove the spark plugs wire and remove the plugs wit a spaerk plug wrench or socket.
The spark plugs are located right under the exhaust manifolds of both sides of the engine. You should just follow the spark plugs wire from the distributer.
spark plug wire setup spark plug wire setup
Remove the spark plug wire caps from the spark plugs. Remove the spark plugs by turning them to the left with a 5/8 deep well socket.
To replace the spark plugs on your Celebrity requires a 5/8" spark plug socket, short extension and either a ratchet or breaker bar. First remove the spark plug wire then use the socket to remove the spark plug. The spark plugs should have a .045" gap. Replace the spark plug and reattach the wire. Continue until you have replace all of the spark plugs.
You won't need a diagram if you change one spark plug wire at a time.
The 1993 GMC spark plug wire distributor wire placement diagram can be obtained from most General Motors dealerships. Most auto-parts stores will have the diagram.
Which engine??
I would like a diagram showing the firing order on the dis coil of a 1999 Chevy suburban with a v8 with dohc engine