Question about 1989 GMC S-15 Jimmy

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I replace the pump and nothing happen still no fuel what could it be now??? im total lost about to shoot the truck lol

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  • GMC Master
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Replace the Ignition control module (ICM) The ICM also controls the fuel pump and did you check if there is 12 V to the fuel pump, It could be a simple fuel pump relay and that's on the fire wall just to the passenger side of the brake booster.There are two relays there so just swap them together and see if that helps. The wire harness from the frame to the gas tank also is know to break when the fuel pump is changed and should have been replaced the same time the fuel pump was replaced. Was the fuel filter also replaced??? Just making sure everything was covered. Recap may sure the fuel pump has power working your way to the relays. Check all the fuse and last replace the ICM if everything check's out good. Keep me posted. Ge gald to help.

Posted on Jun 29, 2009

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  • Master
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Did u check the fuel pump relay and its fuse

Posted on Jun 29, 2009

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