Urgent help with UNS S10 2005 2.4 gasoline

Hi everyone, I have a problem with an S10. It won't start. There's no power to the fuel pump or the spark plugs. I've already tested all the relays and power connections, and they're fine. I also checked the crankshaft and camshaft position sensors, and they're working. I don't know what else to do. The truck started once, but then it died

Hi, check if the ignition key has a transponder or chip; that could be the problem. Try another original key. I suggest you use a scanner if that doesn't work

Did you check if it has a breaker bar in the distributor?

Check that you haven't forgotten to connect any ground wires; in Chevrolets they can be quite troublesome and cause spark and fuel injection problems.

Yes, the key has a chip. I already tried the other original one and nothing. When I press start, the truck doesn't turn off with the key, and the check engine light keeps flashing. It doesn't use a distributor; it's completely electronic, and I already checked all the terminals, and they're fine