Question about 2005 Chevrolet Malibu

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2005 TAHOE CHECK ENGINE LIGHT IS ON AGAIN

HAD FUEL PUMP REPLACED. NOW THE LIGHT IS ON AGAIN.

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  • Barbara Fruth Eller Jun 23, 2009

    I have to get someone to do it for me.

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The engine light could be on for an unrelated reason. Most major auto parts stores will scan and clear codes for free or have a loaner you can use on site. The reader plugs into a port under the dash on the drivers' side....get the code number, then clear it with the reader. If the same code comes back, post it here or Google it for additional help

Posted on Jun 23, 2009

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The most common problem with these vehicles is the fuel pump. The pump should run for a few seconds when you turn the key on before you crank the engine. If you don't hear the pump run, go to the fuse/relay box under the hood. Look at the diagram on the inside of the lid and locate the fuel pump fuse and relay. Check the fuse to see if it is blown put it back if OK or replace it. Unplug the fuel pump relay and use a paper clip to jumper across terminals #30 & #87 where the relay plugs in. If the fuel pump starts running, you should be able to hear it run at the back of the vehicle, where the tank is. If you don't hear the pump running, hit the center of the tank dead-center with a rubber or wooden mallet. If the pump still doesn't run, see if you can get to the wires going to the fuel pump and wiggle them. If you hear the pump run, try starting the engine. If it starts, replace the relay, if that was the problem or the fuel pump AND relay if the fuel pump was the problem. WARNING! WHEN YOU UNPLUG THE PAPER CLIP. IT MAY BE HOT!!!
The fuel pumps AND connector are big problems with GM trucks. If you replace the fuel pump(which is located in the fuel tank), use only the factory pump which you can buy at your GM dealer or an auto parts store that sells Delco parts. If the fuel pump used the small square four-pin electrical connector, replace it with the fuel pump. The latest GM/Delco fuel pumps will come with the new plug which you MUST change over as it is now a flat four-pin connector.
GOOD LUCK!

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