Wount turn over

that sounds like a short in either your colum. or it might be your starter relay.

Check battery connections and cables. Ground may be broken. Remove cables and clean battery posts then reconnect cables.
Check ignition switch, replace as needed.

check the battery cable for a good connection then make sure its in park move the gear shifter around and place back in park. check the head lights for full power. last thing is jump it with cables to make sure the battery is strong.

Get a wiring harness connector for your 1998 GM car - THEN carefully follow each wire color on the harness. Do NOT connect anything to the GM orange wire except "Memory". Do NOT connect anthing to the harness for "Lights" or "Dash" or "DIM" - you will blow fuses. Only connect the Power, the memory and the speakers - period. Then you'll be safe.

check all the ground connections that's a good place to start get back to me if you need more help Thanks Ray

On the times you try to start it and it dont crank do all your dash lights come on like normal?

TURN THE KEY ON FOR 10 MINUTES AND THEN OFF TRY TO START IT SHOULD IF NOT DO IT AGAIN

Further test showed that the interior (dome) and exterior light flickered only while driving. The problem was that the battery rack is broken. The battery negative terminal connect to the motor (OK) but also to the frame of the car through the battery rack. Since that rack is broken, the grounding of the car was intermittent. Whenever I shifted, it made the motor move in relation to the frame of the car, so that's why is caused all the light to turn on in the dash.

Your GM product has a safety alarm, it shuts down the radio , or locks it.
I send ours to a GM dealer to get it unlocked. They don't give those codes out.

you have crossed the ignition wire some place up top before the starter! look close at the configuration up top and be sure start is grounded to block!good luck