Both gas gauges are not working properly reading and stuck on full

Tiny
MARCUSMADRIGALES13
  • MEMBER
  • 1987 GMC SIERRA
  • 5.0L
  • V8
  • 2WD
  • AUTOMATIC
  • 83,000 MILES
We don’t know if it’s a ground wire or what but when I switch gas tanks on either tank my gauge always reads full and I don’t seem to know how to fix it.
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Tuesday, April 6th, 2021 AT 11:58 PM

1 Reply

Tiny
KASEKENNY1
  • EXPERT
I am sure this issue is a gauge but I attached the testing below for what we need to do to prove this out.

Also, here is a video on how to replace the cluster on a Yukon that is similar. However, this is a newer truck so it may not help you but it may help others that visit this page with a similar issue.

https://youtu.be/_HEC44xENxw

This testing below is for your vehicle so let's run through this and see what turns up. Thanks
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Thursday, April 8th, 2021 AT 3:45 PM

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