If your gas gauge is not working and you may have a check engine light on as well then you need a new fuel sending unit. Dealers may tell you that you need a new fuel pump and that a fuel sending unit is not available for your vehicle. However, this is not that case. I have Isuzu OEM/Factory fuel sending units that will fit any Rodeo and Passport from 1998-2002. You will not need to recalibrate anything and it should cost no more than $150 to install, or you can do it yourself in under 2 hours! This unit WILL fix you problem. Do not let the dealer rip you off! I fixed mine in my 2000 Rodeo 4x4 and figured I may as well help others out and save other hundreds of dollars. My item is for sale by calling Andy at (407) 625-4295 or anicol@cfl.rr.com or by looking on eBay.com for Seller awnicol25. Good luck! Save some money!