Check there is spark from the coil. Pull a plug and set it close to a ground and see if there is spark when cranking. If not, then coil or ignition module. If spark, then check fuel pressure at rail. Check fuel pump is coming on when turning key to on. Should hear it.
possiblly the starter or fuel pump is out.
Check battery earth connection.
how to start a 1993 chevy tahoe without a key
More than likely a direct short circuit.
There can be many reasons why a 1997 Chevy Tahoe will not start after sitting for three days. Reasons include a dead battery, a bad starter, a bad alternator, a loose wire, and no gas.
If a Chevy truck tries to start but then doesn't, it might be that the battery is low. Check the alternator also to make sure that battery is charging properly. Some larger motors require a larger cranking amp from the battery to start.
Turn your key to the run position without attempting to crank. Leave it in this position for about 10 seconds. If your Tahoe is equipped with the battery meter, let the meter reach its peak. Then attemp to start.
if it is cranking but wont start check for spark, fuel, air and compression.
Many vehicles are like that when its cold its hard to start #1 check your car battery pop the covers on it and check the cell chainbers and see if there is enough acid inside if not get some from any auto store and top off your battery acid fluid. Like 12$ #2 Your battery might be low on cranking amps. If you dont want this issue and if it was not a #1 issue then you might want to get a battery with bigger cranking amps for the winters.
Cranking amps determine the amount of power that it takes to start a car in most climates. The amount of cranking amps that a battery for a 2003 Jeep Grand Cherokee has would entirely depend on the type of battery that the vehicle has.
There is a good chance that your battery has a dead cell. It will act like a good battery of you start it every so often, but if left overnight, it dies.
Does it have fuel, spark, compression?