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Truck will not crank

Tiny
BITTERCREEK
  • MEMBER
  • 2002 CHEVROLET SUBURBAN
  • 5.3L
  • V6
  • 2WD
  • AUTOMATIC
  • 250,000 MILES
My SUV listed above had some issues cranking for about 2 weeks and finally it wouldn't crank at all. I got a used fuel pump and it worked fine for a week. Now it won't crank. It's firing but not getting fuel. What could be the problem to check? Also the gas gauge is off and the needle is off the charts in between the two pegs down south between the empty and full. The truck also won't drive in third year only second and first.
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Saturday, October 19th, 2019 AT 8:08 PM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,705 POSTS
Welcome to 2CarPros.

Can you hear the fuel pump prime when you first turn the key to the run position? Have you checked both the fuse and fuel pump relay?

See picture 1. It is the under hood fuse box. I highlighted what needs checked first. Also, make sure there is power to the relay.

Here are a few links you may find helpful:

https://www.2carpros.com/articles/how-to-check-a-car-fuse

https://www.2carpros.com/articles/how-to-check-an-electrical-relay-and-wiring-control-circuit

https://www.2carpros.com/articles/how-to-use-a-test-light-circuit-tester

https://www.2carpros.com/articles/how-to-use-a-voltmeter

https://www.2carpros.com/articles/how-to-check-wiring

___________________

Let me know.

Joe
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Monday, October 21st, 2019 AT 8:12 PM

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