First you will need a compression tester and tools to remove the spark plugs.
Disconnect the coil so the engine will not start while testing. Remove spark plugs on the cylinders you want to test. Select the correct tester fitting for your spark plug thread size. Screw tester into the spark plug hole and crank over the engine for one to two seconds. Read compression tester and repeat for each cylinder you want to test.
Check the vin #'s because in the 1990's Chevy called their smaller line of vans "Lumina" also.
Same place you check the fluid level.
check the fuse's first. then check the lamps [bulbs].....
Compression test
Check the relay.
Driver, Check out : www.fueleconomy.gov/ for the official mileage ratings.
Depends on your climate. Check your drivers manual.
Low catalytic converter efficiency.
There are several things that can cause your Chevy Lumina fan to not work properly. The most common cause is a bad ground wire. Check the ground wire and make sure it is tight and free of corrosion.
check your glove box for manual or buy a chiltons manual
i unhooked the battery...(both terminals)
CHECK YOUR FUSE