Does not crank or start

Tiny
TLALONDE
  • MEMBER
  • 2008 PONTIAC GRAND PRIX
  • 3.8L
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 130,000 MILES
Car does not crank at all, fuel pump is not activating. Changed the battery and the starter.
Saturday, July 21st, 2018 AT 1:22 PM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 48,363 POSTS
Can I ask a couple of quarions? First do you have any lights at all, headlights? If so is the security light flashing when you crank the engine over?

Here is the starter wiring so we can see how the system works there is a crank relay #48 that needs to be checked:

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

Check out the diagrams (below). Please let us know what happens.

Cheers, Ken
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Monday, July 23rd, 2018 AT 10:51 AM

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