Got an 00 tahoe. Seems like I can literally watch the gas gauge drop! I know I'll just have to check the mileage to see if it actually is drinking gas but in the meantime I just wanted to know if anyone else ever had this problem or if this is a common problem that I haven't heard yet. Pretty sure also that I looked down a couple times and it was actually a fraction higher. That's what is making me wonder if it's a faulty gauge. It runs great. I also have an 01 and it doesn't seem to have this issue. Anybody?