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1991 k3500 tach and speedo stop working

Tiny
FSJH
  • MEMBER
  • 1991 ALL OTHER MAKES ALL OTHER MODELS
I have a 1991 k3500 dually and the tach and speedo both stopped working at the same time. I pulled the cluster and sent it in for repair they tested it and said the tach worked just fine so its not the cluster. Not sure what to do next. How can I test the speed sensor?

thanks
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Thursday, May 10th, 2007 AT 6:06 PM

2 Replies

Tiny
E40WATER12
  • MECHANIC
  • 522 POSTS
Speed sensor would be my conclusion.
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Thursday, May 24th, 2007 AT 3:37 AM
Tiny
FSJH
  • MEMBER
  • 2 POSTS
I have replaced the seed sensor. So I how have the tack working it is some how tied to the brake fuse? Speed is still not working and now the temp has gone out as well.
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Thursday, May 24th, 2007 AT 7:20 PM

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