I have a 98 oldsmobile bravada and my fuel gauge stopped working. it has a new fuel pump in it but i cant get in touch with the man i bought it from to get the warranty information. i just need to know what is wrong so i can call around and get prices.

How to Install the Fuel Pump E3992M in 1998-2005 ...

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www.youtube.com/watch?v=sRq2ohp8A7o
Apr 20, 2012 - Uploaded by Airtex Pumps 2001-98 OLDSMOBILE BRAVADA 262 (4.3L) ... is committed to providing the most up-to-date, in-depth fuel pump replacementinformation that ...

maybe a fuse as all the wiring for pump and gauge go to the tank check fuel pump relay as well

Fuel gauge failed or fuel sending unit go to bad. Check it taking off the fuel pump.
The No Comunication condition could be a wiirng or harnesses lose, check it; if not, PCM or BCM go to bad.

Good luck.

Hello alfred12954,

Your description sound like the fuel pump is not working. If you have a fuel pressure gauge it should read 60 - 66 psi with the key on. If it reads lower than 60 but more than 0 psi it won't start replace the pump.

If it reads 0 psi you are possibly looking at a wiring problem.

Regards,
netvan

Have you checked for injector pulse and fault codes? Do so.

This sounds familiar to me. I assume you replaced the fuel filter, if not, do so. Anyway, the same thing happened to be and I made it to the garage somehow and they said it was the pump, located inside the tank. 3 days later I picked it up and paid $350.00. It happened again a month later and I had it towed home ( the service garage changed hands and would not honor warranty). I unbolted and unstrapped the gas tank with a jack under it. The gauge said 1/4 tank so I figured on 40 lbs of fuel plus the tank.....wrong.... The tank was empty and the fuel pump had never been replaced. I has just never run my tank down that low before, so I had no way of knowing the gauge/float was miscalibrated. You never know....

sound like a problem with your sending unit inside the gas tank with fuel pump or gauge in dash defective but with GM usually it is the sending unit

Check your fuel pressure at the Shredder valve, you should have 60PSI to 65PSI. If you have less then that or more then that your going to have problems with your fuel injection system. The other thing to is to check your fuel pressure regulator. Hook up the fuel pressure gauge and turn the ignition switch to the run position to activate the fuel pump. Once the pump stops pressurizing the fuel line wait and see if your losing the fuel pressure excessively. If you are then your may have a bad regulator and it's leaking internally. The other thing to is may be a bad fuel pump, The good news is the fuel pump in the sending unit in your bravada can be replaced rather then the whole unit. If it is the fuel pump, Buy a heavy duty pump to install to your sending unit. Don't have them sell you the whole unit, pump alone is around average $60.00 other then the whole unit for $230.00. Good luck and keep me posted, be glad to help

could be 1 of 2 things. the gauge itself could be bad or, a wire to the gauge

fuel gauge sending unit is at fault