1993 suburban is not starting and it is not the battery. What could it be?

If your saying the starter motor won't crank? Make sure the battery has a full charge and battery connections are all good. Then check the wiring circuits at the starter for voltage and ground. When testing at the starter make sure tranny is in park or neutral and the parking brake is set.

If it cranks good but won't start, have a helper crank it while you visually check for spark at the spark plugs. If spark everywhere, use a gage and check proper fuel pressure, also check fuel injector pulse. Can you check applicable trouble codes? How long since a tune-up?

On Blazers, when you turn the key, it pulls the rod up and down. It is by where the tilt is. This rod usually has a bend in it so when you put the new rod in, you have to jiggle it a lot.

Check all fuses under the hood. Test the coil with an ohmmeter. Check for battery voltage on the coil primary with key on.
If all good, suspect the crank position sensor. A bad sensor will cause no spark.

its a possibility that the alternator is shoot, and you do not have the power to turn engine over to start it. if battery is ok ! then get vehicle started. all accessories off,with it running you should have at least 14.2-14.7 voltage at battery. if you do not have a way to check this. auto-zone will check for free, as well as advanced auto.if all is ok, and the voltage running is less the 14 volts. replace alternator. good-day !

i have a 1993 suburban gmc 1500. when i put the key in an turn it nothing happen at all.befor the car stop running it use to act crazy like start up in run great but when u turn it off it dont start back up. u wll have to wait than it will start..can u tell me what that can be..

At napa it is a 7578,or a 78 series,it is the large ac style battery,with side post.has about 850 cold cranking amps.

you have a bare wire leading form the alt too the field prob right at the intake manifold!!

check that the battery has 12 v if battery is more than 2 years old could need replacement with the correct size unit.

battery falt ,recharge the battery for 2/3 days and use jumper cables as well to help it start

bad starter