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ZZDaryl, Chevy Technician
Category: Chevy
Satisfied Customers: 12547
Experience:  28 year experience, Master Mechanic
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why does my gas gauge go up and down when im driving and in park

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HiCustomer Thank you for asking your question on Just Answer. The other Experts and I are working on your answer. By the way, it would help us to know:

-What year is your Chevy?
-What model is your Chevy?
-What type of engine is in your Chevy?

Thank you again for trusting us with your problem. Please reply as soon as possible so that we can finish answering your question.
Customer: replied 8 years ago.
i have a 2001 chevy 1500 silverado. it has a vortec 4.8 v8.

This is a common problem on this vehicle, the fuel tank sending unit on these go bad causing the problem you described.

ZZDaryl and 3 other Chevy Specialists are ready to help you

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