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it is a fuel injected model, so the pump is inside the gas tank. you have to drop the tank, unplug the pump. you will probably need a big screwdriver, and a hammer to get the lockring off. hit the tabs sticking up, until ring turns. after you remove ring, you can pull pump up out of tank. be sure to replace sock filter on bottom of pump. installation is reverse of above.

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14y ago
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Q: How do you replace fuel pump in 2000 GMC sierra pickup?
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