Question about 1999 GMC Suburban

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I have no currant to the relay for the fuel pump on a 1999 gmc suburban Are there any fuses to be checked, and if so where are they located?

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There is a relay in the engine compartment And there also should be a fuse in the relay box for the pump it will be marked on the lid when you remove it. There is another fuse in the inside of the suburban for the computer and for gages make sure they are OK, pull the fuse out and when looking at the fuse make sure it is connected the s should touch each spade terminal. if all the fuses are good then turn the key to the run position and listen for the fuel pump in the tank it should run for two seconds, if you don't hear the fuel pump run and the fuses are OK then your oil pressure switch is defective and depending on which engine you have will determine where the location will be for the oil pressure switch. The oil pressure switch will shut off the power to the fuel pump if it does not show oil pressure and depending if you have a oil gage or not you will not know for sure. you will not have power to the relay unless the vehicle is cranking over. also I can't remember if it has a roll over switch on that model, check the glove box or on the side where you fill up the fuel tank your it should be on that side I hope this helps And thanks for using fix-ya.

Posted on Apr 23, 2010

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