Security light on, no power to fuel pump

1998 CHEVROLET VENTURE
150,000 MILES
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HAHAMOMMA
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Or is it more likely the security system not allowing power to the fuel pump. I have no power going to my fuel pump. Had to disconnect negative battery cable to do repairs and have an aftermarket stereo so cannot enter a security code through the radio. Have replaced the MAF sensor, the fuel pump, the fuel pump relay and rebuilt connectors in harness to the fuel pump. Have no power going through the wire harness to the fuel pump when I halfway turn the key to engage the fuel pump. Can you please help?
Sep 4, 2011 at 12:21 PM
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JACOBANDNICKOLAS
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What has happens is you interrupted the security system which is tied to the stock radio. Here is a wiring diagrams to help you see what I am talking about. It will need to be reconnected.

Both wires are dark green. Check out the diagrams (below). Please let us know if you need anything else to get the problem fixed.

Cheers
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Sep 5, 2011 at 2:22 AM
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SJFURNER
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Lost my key had local dealership cut me a new one. Security light comes on, will not start. Tried to do what the dealers said to reset the security code. Will not work. They want to switch out the entire ignition. Any ideas?
Aug 3, 2018 at 12:27 PM (Merged)
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WRENCHTECH
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Yep, you need to have the key reprogrammed to the car it should cost about $130.00.

Did you try the relearn? Leave the key on for thirty minutes until the security light stops blinking then shut the car off and restart it this should reset the system.
Aug 3, 2018 at 12:27 PM (Merged)
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SATURNTECH9
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Yes, that should work. Here is what I found:


https://www.2carpros.com/forum/automotive_pictures/416332_2000_chevy_venture_pass_lock_learn_1.jpg

Is what I posted what they told you to do? If not try that.
Aug 3, 2018 at 12:27 PM (Merged)
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MARIA74
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Security light is on and it will not let the van turn on.
Aug 3, 2018 at 12:28 PM (Merged)
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SATURNTECH9
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Yes, it will not let it start. Is there a cross on your key?
Aug 3, 2018 at 12:28 PM (Merged)