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No crank no start

Tiny
ESILVERGIRL
  • MEMBER
  • 2003 CHEVROLET TRAILBLAZER
  • 4.2L
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 200,000 MILES
I replaced battery, ignition switch, ignition relay and starter. Still nothing. All fuses look great. Any ideas? I'm 61 year old lady that works on my SUV but I'm dumb founded on this one. Please help me.
Wednesday, December 23rd, 2020 AT 1:06 PM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,179 POSTS
Hi,

We need to start by checking three different fuses. However, just for the heck of it, see if it will start in neutral.

Pic 1 below shows a portion of the wiring schematic related to the starting system. I highlighted three fuses which are all located in the underhood fuse box. Pic 2 shows their locations.

Now, in addition to checking the condition of the fuse, I need you to check if there is power both to the fuse and out from it. Here is a link you may find helpful:

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

Do this and let me know the results.

Merry Christmas,
Joe
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Wednesday, December 23rd, 2020 AT 8:17 PM

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