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Old 01-11-2014, 05:30 PM   #2
ray_mcavoy
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Join Date: Nov 2009
Location: Sherman, ME
Posts: 2,379
Re: 83 GMC Instruments Do Not Work

Quote:
Originally Posted by 67RS/SSx2 View Post
I do not yet have a service manual for this truck. Is there a fuse that could affect all instruments except the speedo? Any suggestions on where I should begin my search?
Yes, there is a "GAUGES" fuse that powers all of the electric gauges in the cluster. I think some years labeled it as "GAU / IDLE" because it also powers an idle speed solenoid on some engines.

It should be located over on the left side of the fuse box, second slot down from the hazard flasher that's in the upper/left corner.
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