Turn over the ignition and it does not crank over?

Tiny
WILBORN2018
  • MEMBER
  • 2003 HUMMER H2
  • 6.0L
  • V8
  • 4WD
  • AUTOMATIC
  • 165,000 MILES
Turn over the ignition and it doesn't start. When I turned it over all the gauges zeroed out until I let off the ignition. I have put a battery charger on to make sure that it isn't the battery. Replaced the starter nothing, ran a jump wire off the starter still won't start. Replaced everything for the ignition still nothing. Even done a little starting fluid in the air intake to try to get it to start. I can only get it to crank over when I use the jumper wirer from the starter.
Thursday, September 28th, 2023 AT 11:49 AM

4 Replies

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,256 POSTS
Can I ask if the security light is flashing? Also, we should run the codes, have you checked the fuses? Let's go over these guides to get us closer to fixing the problem:

https://www.2carpros.com/articles/how-to-reset-a-security-system

and

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

and

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

Here are the fuse locations to help. Check out the images (below). Please let us know what happens.

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Thursday, September 28th, 2023 AT 12:29 PM
Tiny
WILBORN2018
  • MEMBER
  • 3 POSTS
I also have checked all the fuses through the whole vehicle. The security light on the vehicle is not flashing.
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Thursday, September 28th, 2023 AT 12:34 PM
Tiny
WILBORN2018
  • MEMBER
  • 3 POSTS
Also have tried to hook up a code reader and it say that it won't connect.
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Thursday, September 28th, 2023 AT 12:35 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,256 POSTS
Okay, you could have a bad PCM but let's check for power at the CIG LTR fuse 15 amp under the hood. This is the fuse that powers the ALDL connector port. Please let me know.
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Friday, September 29th, 2023 AT 10:06 AM

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