1999 Pontiac Grand Am GT Logo
Posted on Sep 15, 2011
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Fuel pump not working - 1999 Pontiac Grand Am GT

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bob smith

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  • Posted on Sep 15, 2011
bob smith
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Many things can cause this concern. on many GM vehicles there is a fuel pump test or prime lead under the hood. (green connector) .when grounded fuel pump should run. if not check fuel pump relay and all terminals for proper voltages,ground,or resistance. PCM may not be sending fuel pump "run" signal. if that is the case,PCM will need to be replaced and reprogramed. with a GM scan tool,you can control fuel pump on-off for easy diagnose. fuel pump is located in fuel tank and will require tank removal for testing or replacement of pump.

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  • Posted on Sep 15, 2011
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First check the fuel pump relay...It's located underhood junction block, in the left side of engine compartment.

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