Having problems with your 2003 Chevrolet Tahoe ?

03 Tahoe Z71 Flex Fuel won't start and run. Engine turns over, fires, but won't start. I can hear the fuel pump run but it is not a steady sound like I would normally hear. I am getting a P0

\015 I did spray a little ether in the air box(I know not a good ldea) and the engine ran until it burned off the ether.\015 Posted / edited by AnonymousUser on : 11-12-2017

Answers :

It wouldn't hurt to check fuel pressure with a fuel pressure gauge. you should see somewhere around 48 - 55 psi. the test port is on the fuel rail about in the middle of the rail and on the drivers side.

If the fuel fuel pressure is low it wouldn't hurt to make sure there is power to the fuel pump before condemning it. Power is supplied to the pump by the larger of the two grey wires.

The fuel pump is located in the fuel tank and the fuel tank will need to be dropped from the vehicle in order to service the fuel pump.

If you decide to replace the fuel pump get an a/c delco or a delphi pump. These are the best two option for your vehicle. Do not get an airtex brand. They are not reliable pumps although they are cheap.

Let me know if you have any questions and thank you for using fixya.com!
Repair Help & Product Troubleshooting for 2003 Chevrolet Tahoe

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