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Fuse box, half my fuse under hood have no power with key on or off?

Tiny
HAMMERTOTER
  • MEMBER
  • 2008 GMC ENVOY
  • 4.2L
  • V6
  • 4WD
  • AUTOMATIC
  • 120,000 MILES
Jump started my truck with the vehicle listed above shut off. Put new ECM in the vehicle, turns over but won't start. Half my fuse under hood no power with key on or
off.
Wednesday, February 22nd, 2023 AT 12:29 AM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,289 POSTS
Hi,

I attached a pic of the under-hood fuse box below. Take a look at it and let me know which fuses or which half doesn't get power.

I also looked at the power distribution schematics. I need to check fuses that have no power to determine if there is a fuse upstream from them or if the box itself has failed.

Let me know.

Joe

See pic below.
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Wednesday, February 22nd, 2023 AT 7:43 PM

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