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Re: 2004 pontiac grand prix gt 3800 serise 3 my fuel pump...
You can put the live wire from the battery directly to the pump connector. if you have the difficulty to select the right connector, you need to take out the pump assembly then see from inside.
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Pontiac stopped installing the fuel filter on the rail in 2006. The 2004-2005 models had a fuel filter on the driver's side under the rear passenger seat area clipped to the frame. 2006 beyond the fuel filter is part of the fuel pump unit inside the tank.
sounds like you need new fuel pump. fuel pump located in gas tank. before you go buy a new fuel pump first push up and down on trunk of car real hard to try to dislodge the little armature inside of tank. this little armature is what sends the signal to the gauge telling you the quantity. push up and down on truck to try to dislodge small signal armature then check your quantity. try this when you are having the problem and i am willing to bet the little armature is stuck. the only way to fix is to buy a new pump.
Hello! When you swapped the engine, did you have the PCM (Powertrain Control Module) from the new motor as well? If not - you will need to have a "CASE" learn run on the PCM that you're currently using (the one from your previous engine). Important note: the 1997 Grand Prix GT's and GTP's have quite a few differences from the 98-03's. The CASE procedure is run using the Tech II tool and can be done at any dealership in about 10 minutes. If they aren't sure what that is, suggest to them that they follow the procedure for DTC 1336 - Crankshaft Position (CKP) System Variation Not Learned. :)
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