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
Wednesday, March 7th, 2018 AT 2:05 PM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 54,149 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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