Quote:
Originally Posted by gspost12
I have an 02 Tahoe and as long as I have owned it, the fuel guage will only go to 9/10 full when I fill it up. At empty (low fuel light) and guage nearly pegged to left, I can only put in 18 gallons of gas. It is supposed to have 26 gallon tank capacity. Do I have a faulty sending unit? I am afraid to continue driving on empty, but could til I run out (carry gas can with me) to see if I still have8 gallons of gas in my tank unaccounted for. Anyone else ever see this problem? Short of dropping my tank this summer, looking for ideas. TIA GRP
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You could ground sending unit and see if gauge goes to full.
If so the problem would be fuel sending unit in tank.
If you are sure it is a 26 gallon tank I would just refill it when it hits around 18 gallons low.
Do not run a fuel tank over a 1/4 low
How many miles on it.
If a lot of miles some day you will need to replace the fuel pump module that will fix gauge and pump at same time.
You might try some fuel injector /tank cleaner that some time will remove problem varnish on fuel sending unit resistor.