Lock out code

fuses do not make a grinding sound. You will need to open trunk and inspect/replace trunk release
Partsgeek sellss parts on ebay cost $35.00 1997-2001 Chevrolet Lumina Trunk Lid Release Switch AC Delco 26443WF 1998

Check fuses
I found fuse box diagram which one of the fuses is for Theft-Deterrent Module, Radio. I would go through and check fuses
Chevrolet Lumina (1997) - fuse box diagram - Auto Genius
Some info no theft-deterrent below
1997 Chevy Lumina Car Will Not Start. "security" (2carpros.com)
Security System Preventing Car From Running: Car Will Not Start, ... (2carpros.com)

Take your VIN# to a dealership and they will be able to pull your code.

Check this...



Hope helps (remember rated this)

here are two definitions.
First: ignition coil module 4 times ref circuit intermittent no pulses.
Second: Distributorless ignition system 4 times signal interrupted.
You will want to inspect the spark-plugs, spark-plug boots, Coils for defects. Let me know how it goes.

The owners manual should tell you how to reset the code with a factory code that will let you in.

shouldnt have to pay notify a chevy dealer in person for code most dealers wont deal with a code problem over phone they dont charge for the code due to the fact that a dead battery can also lock out the radio system into the anti-theft mode

push and hold 1 and 3 -write down code

push and hold 2 and 4 - write down code

call delco radio with code numbers and they will give you an unlock code 1-800-537-5140

Turn the radio off. Push the set button until the : blinks. Push scan to change the hours and the seek to change the minutes. When complete, push the set button again and your done.

Search the net for "Delco unlock codes" OR "Delco security codes" you should easily find a set of instructions telling you to get a code from your radio and then call an 800 number. Follow these instructions. This will give you the factory unlock code for your stereo. Worked for me and for heaven sakes don't pay anybody for this information - it's free.