Keeps blowing ignition fuse

2005 CHEVROLET COLORADO
150,000 MILES • 3.5L • 5 CYL • 4WD • MANUAL
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TREVDOG71
  • MEMBER
  • 3 POSTS
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 8:40 AM
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STRAILER
  • ✓Experienced Mechanic
  • 55,542 POSTS
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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Aug 16, 2018 at 5:28 AM
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TREVDOG71
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  • 3 POSTS
Yes it was the coils.
Thanks
Aug 21, 2018 at 2:02 AM
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STRAILER
  • ✓Experienced Mechanic
  • 55,542 POSTS
Good to hear, please use 2CarPros anytime we are here to help.

Cheers, Ken
Aug 21, 2018 at 3:57 AM
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TREVDOG71
  • MEMBER
  • 3 POSTS
Update: Drove the truck around the block and it is still doing it.
Aug 22, 2018 at 4:47 PM
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STRAILER
  • ✓Experienced Mechanic
  • 55,542 POSTS
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 7:11 AM
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