Ok, here's the situation to recap: '99 suburban bought not all too long ago in need of a few fixes. This particular one deals with the fuel gauge needle. Tied in with another issue. Since having bought the 'burban the fuel gauges buzzes really fast back and forth. I don't think I trust it's reading either. Although it shows almost full when I actually fill up, when it gets near empty it starts to be more erratic and will actually move from E to partially full to totally full to way back down to E, and then a spike to F.. etc etc. Because of the other issue stated, (see that issue here: http://www.gmtruckclub.com/forum/showthread.php?t=14894 ) I figured I'd try the fuel pump assembly. I went with the advice that the pump assembly may be the cause of it all. Unfortunately, with having swapped out the entire assembly with a new one, the problem persists. I got back in the driver's seat, started the truck up and there went the needle again.. *buzzzzzzzzzzz* So now I'm back to ask for advice and opinions as to what you may think I want to check on next. Does anyone have any ideas on what else could cause the problem of the buzzing fuel gauge? Thanks!