Keeps blowing ignition fuse

2005 CHEVROLET COLORADO
150,000 MILES • 3.5L • 5 CYL • 4WD • MANUAL
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TREVDOG71
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It left me stranded for hours. I go to start it and it blows fuse #23 ignition. I tried all the tricks for the ignition, even replaced the electrical component on the back of the ignition. I have not messed the other part. Thinking that might do it, nothing. Same thing blown fuse. So I am thinking bad ground, direct short. Help
Aug 13, 2018 at 3:40 PM
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STRAILER
  • ✓ASE Certified Mechanic
  • 54,832 POSTS
  • ASE Certified Mechanic
Hello,

That fuse power the ignition coils and clutch neutral switch. Can you please unplug them and replace the fuse to see if it still blows? It sounds like one of the coils has shorted here is a wiring diagram so you can see as well.

Check out the diagrams (below). Please let us know what you find. We are interested to see what it is.

Cheers, Ken
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Professional Diagram for 2CarPros Members
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Aug 16, 2018 at 12:28 PM
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TREVDOG71
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Yes it was the coils.
Thanks
Aug 21, 2018 at 9:02 AM
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STRAILER
  • ✓ASE Certified Mechanic
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Good to hear, please use 2CarPros anytime we are here to help.

Cheers, Ken
Aug 21, 2018 at 10:57 AM
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TREVDOG71
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Update: Drove the truck around the block and it is still doing it.
Aug 22, 2018 at 11:47 PM
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STRAILER
  • ✓ASE Certified Mechanic
  • 54,832 POSTS
  • ASE Certified Mechanic
That fuse supplies power to the AC compressor relay and the park/neutral safety switch. Can you leave the HVAC off to see if it still does it?
Aug 23, 2018 at 2:11 PM
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