Car won't start, engine locked down due to immobilizer. Locks work, lights work. It's a 1994 Chevrolet conversion van g20 series . We charged the battery of the van, that's not it. It doesn't do anything, no sounds, no clicks, nothing.

Check vacuum lines.
There is a large one on the power brake booster that goes to the back on the fuel system. Make sure you have vacuum before you try anything else.
A vacuum leak will cause you to stall out.

Donald, You did not state the model, so I posted the link for the models I found for chevy van fuse box. Check the attached links,instruction and guides, Good luck
"I hope this helped you out, if so let me know by pressing the helpful button. Check out some of my other posts if you need more tips and info."
Interior Fuse Box Location 1990 1996 Chevrolet G20 1994 Chevrolet G20...
Blown Fuse Check 1990 1996 Chevrolet G20 1994 Chevrolet G20 Chevy Van 4 3L...
fuse box diagram 1990 chevy astro van pdf 1 Docs Engine com
1990 Chevy van fusebox location Google Search

saund like a electrical problem not the fuse

Check your E-break first, secondly check to make sure you have no errors kicking from the control unit (engine computer module) which may or may not trigger a check engine light. Moreover it could be several things. Since it's an automatic the drive train maybe damaged, controller unite could be damaged, the transmission could (and probably) is dying. I'd have a professional mechanic check it out.

I believe the seats are bolted to the floor of the van. Make sure you unplug all electrical connections before removing the seats.

Does the battery light work when you switch the ignition on? This provides a live feed to the alternator via the ignition bulb, the rotor needs a live feed to start the charge process, if the bulb has blown it won't charge (thin wire connected to the IND on the alternator). To check for a power drain, disconnect the negative battery lead put a AMP meter in series, (DON'T TRY TO START, YOU WILL BLOW THE METER). If you get a reading above 0.05amps (clock) you have a drain, pull the fuses one at a time and watch for a drop in the meter reading. Hope this helps.

It can be issue with keyfob or door locking mechanism.

Check the help link mentioned below:---

How to test Power door locks?

http://repairhelpcenter.blogspot.in/2012/02/how-to-test-power-door-locks.html

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2006 Toyota Camry: Power Door Locks Not Working?

http://whatisbyme.blogspot.in/2012/05/2006-toyota-camry-power-door-locks-not.html

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Door locks or windows not working on car?
http://schematicsdiagram.blogspot.com/2011/07/door-locks-or-windows-not-working-on.html

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All power door locks not working on Honda Accord?
http://howtobyme.blogspot.com/2011/11/all-power-door-locks-not-working-on_14.html

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Repairing car Door lock Actuator?
http://howtobyme.blogspot.com/2011/11/repairing-car-door-lock-actuator.html

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How to Access car door panel?
http://howtobyme.blogspot.com/2011/11/how-to-access-car-door-panel.html
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Vehicle door panel components?
http://howtobyme.blogspot.com/2011/11/vehicle-door-panel-components.html

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Power door locks not working?

http://schematicsdiagram.blogspot.com/2011/12/power-door-locks-not-working.html

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Door locks not working on Ford Explorer?

http://technoanswers.blogspot.com/2012/01/door-locks-not-working-on-ford-explorer.html

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These details will help.
Thanks.

(1) Check the lock and unlock relays.If they have the same part number change them around to see if problem reverses.Could be bad relays.(2) Also check connections going to the actuators.

you have a burnt bulb, put your 4 wayson(safty flashers)walk around the van, if your signal lights are not flashing get a bulb for it .or even autozones will help find them and help you put them in if you never done this before

I just had the same problem. If it is a regular van try under the driver seat in a plastic box. If it is a conversion van try in a pannel just behind driver seat on side of van wall behind a pannel that looks like a vent.