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Engine not starting up and running?

Tiny
SOUTHERNREBS59
  • MEMBER
  • 2005 CHEVROLET SILVERADO
  • V8
  • 2WD
  • AUTOMATIC
  • 280,000 MILES
A few months ago truck would not start so I replaced the crank sensor now my truck is doing the same thing it will not start security light is flashing when I try to start it I went and bought another crank sensor and replaced it and it still doing the same thing with the security light coming on and goes off when trying to start engine
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Wednesday, March 7th, 2018 AT 2:05 PM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,756 POSTS
Hello,

When you turn the key to the on position without cranking the engine over can you hear the fuel pump run in the tank for 5 seconds?

https://www.2carpros.com/articles/car-cranks-but-wont-start

It sounds like you have a BCM going out which is the security system but we should run the codes first to see whats going on. Here is a guide to help you.

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

Please run down these guides and report back.

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Wednesday, September 2nd, 2020 AT 12:50 PM

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