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Open the fuel filler door and remove the gas cap, put your ear to the filler neck and have someone turn the ignition key to the on position. If the Fuel pump is operating you should hear it buzz or hum for about 3 or 4 seconds. If you hear it buzz or hum it is working. But it does not tell you if you have the required fuel pressure to start the vehicle. A fuel pressure gauge attached to the service fitting on the fuel rail will give a fuel pressure reading. I left Chevrolet in 1998 but I believe the fuel pressure should be around 45 to 65 psi.

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12y ago
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Q: How do you check a fuel pump on a Pontiac Firebird 1999 with a 38L V6?
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