2000 Escalade fuel gauge problem

I have a 2000 Escalade and the fuel gauge is stuck on full most of the time. It will occasionally move off of full just a bit as the fuel is depleted, and when I fill it up it pegs past full. It will also drop from full to empty sometimes, and then go right back to full. Any suggestions?

check the connector but most likely the sending unit on the fuel pump assy is bad.. common gm problem around 60k mi or up

2ooo sierra 1500 same problem my brother in fla has same problem with 2ooo suburban

I have 00 escalade as well and it was the sending unit that was bad... that was fixed under my extended warranty, but the gauge still has a life of its own from time to time... gas tank now has a slight leak too...

Make sure that your fuel gauge is not clogged,clopgged fuel gauges may sometimes cause malfunction.Good quality cadillac parts (http://www.speedyperformanceparts.com/cadillac-parts.html) can be found in auto shops.I hope I could help.