How to flush a radiator in a 1998 chev lumina

Visit the on-line store, known as reliable-store, they have the repair manuals. I'm sure you will get the solution of your problem. Best Manuals

Nope there is no switch like the "Valet" switch in after market alarms

YOU HAVE TO UNBOLT SWING AWAY THE TOP ENGINE TORQUE STRUT MOUNTS FROM THE UPPER RADIATOR SUPPORT THEN.RADIATOR WILL COME OUT AT THE TOP.

fill at radiator there are 2 bleeder screws 1 located on thermostat housing and 1 located to left at water pump housing. open when engine is warmed up to bleed air and refill radiater after engine cools.

Check the DIS module or injectors. Check to make sure you have a spark on each cylinder. One cylinder could be misfiring

open the PASSENGER FRONT DOOR and look on the side of dash

Looking from the front of the car, left side (drivers) the plug closest to you is #1
#2 is the closest to you on the right side.
#3 is the second on on the left
#4 is the second on on the right
#5 is the next on the left
#6 in the next on the right.

There is None to my knowledge.. Ive done thousands of them.. Its way too hard to explain.. I did my first one by the seat of my pants.. only advice I can give is : Dont mix up the pushrods!! If ya do,, it'll warp valves bc the intake and exaust push rods are different lengths

check the crank sensor

go to auto parts store and get a flush kit,

cut and insert the "T" from the flush kit on the heater hose outlet or inlet.
make sure you are cutting into the heater hose coming out of the firewall heater area and not a large vacuum line.
if your not sure ask a mechanic.

connect the kits anti syphon to water hose and connect to the T you have installed ,
open the radiator , and flush very slow if engine is hot , or wait till engine is cool as a very cold flush can damage the engine.