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Old 09-24-2019, 06:06 PM   #1 (permalink)
Heat Sink
Join Date: Mar 2016
Posts: 10

6.5 help fuel gauge an PO126

I was on a trip and I got diesel with my engine running, my fuel gauge flipped out and went way past full. I stopped at another gas station 35 miles later and turned off the truck. I would not start after. Its reading insufficient coolant code now . Ideas? Do I check coolant sensors first or drop the tank?

1999 GMC sierra 6.5L
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