I have a 2000 gmc with a 4.8 in it and my buddy has 2001 with a 4.3 in it. My gas guage has not been working since beginning of winter or around 100k his has not worked since he bought it. it will bounce from empty to full to half...just all over the place. does anyone else have this problem with their trucks?? or maybe some advice without dropping the tanks?? its really irritating.