#27 fuse blowing

2006 GMC SAVANA
150,000 MILES
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ERICSCOFIELD
  • MEMBER
  • 1 POST
blowing #27 crank fuse intermittingly, I replaced starter.
May 6, 2022 at 7:17 AM
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STRAILER
  • ✓ASE Certified Mechanic
  • 54,832 POSTS
  • ASE Certified Mechanic
Fuse #27 powers the PCM. This can be caused by a shorted ignition coil, fuel injector or O2 sensor. I would disconnect all O2 sensors and drive it to see if the fuse blows, how often does this happen? Here are the oxygen sensor locations to help get you started. Check out the diagrams (below). Let us know what happens and please upload pictures or videos of the problem.

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May 6, 2022 at 2:50 PM
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