1999 GMC Yukon 6 cyl Four Wheel Drive Automatic 86000 miles
I just purchased this used Yukon, and was happy to see the dealer filled the gas tank. But after 200 miles of highway travel and the gauge was still reading full.
I decided to stop and fill the tank to see just what was happening. It took 20 gallons, and now the gauge was reading EMPTY. Strange? After about 50 miles and a moderate bump the gauge went to FULL, more bumps more empties and fulls, until it finally settled at full. I refilled the tank after 300 miles and same thing all over.
At first I thought loose wire. But then it would read correctly when making connection and either full or empty when open.
Now I'm guessing sensor in tank, so how do you change that?
thanks for your time and expertese
Very good reply, very detailed. Although I don't think I'm up to that much work. Do you think my guess is correct or could it be something else? I'm going to be 70 in June and can't do a lot of physical stuff but I am very experienced electrical trouble shooting and repair.
Thanks again for your time.
Tuesday, April 7th, 2009 AT 12:30 PM