Security light on, no power to fuel pump

HAHAMOMMA

MEMBER
1998 CHEVROLET VENTURE
150,000 MILES

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?

6 Replies

JACOBANDNICKOLAS

MECHANIC
109,885 POSTS

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.

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Monday, September 5th, 2011 AT 2:22 AM

SJFURNER

MEMBER
1 POST
2000 CHEVROLET VENTURE
6 CYL
FWD
AUTOMATIC
186,000 MILES

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?

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Friday, August 3rd, 2018 AT 12:27 PM (Merged)

WRENCHTECH

MECHANIC
20,761 POSTS

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.

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Friday, August 3rd, 2018 AT 12:27 PM (Merged)

SATURNTECH9