Hey guys, I got a new buddy here that has the above mentioned vehicle and he's got a wonky fuel gauge. He told me he had the entire fuel pump assembly replaced about 8 months ago and now sometimes the fuel gauge works and sometimes it doesn't. He called a shop and the guy told him they'd have to drop the tank, blah, blah and I told him that was crazy, because if it were mine, I'd remove the 8 bolts holding the bed on and two wiring harnesses for the lights and take the bed off. He thought that was a great idea. Well, he was in the truck this evening and told me that 85% of the time the gauge works and then it doesn't. I told him it sounded more electrical to me than anything. He fired the truck up, and sure enough, it was on E, even though he'd filled it up an hour before we met him and his wife for dinner and had 6 miles on the tank. He pulled in into R and it didn't move the gauge, then he put it in D and the gauge bounced 4 times and hit F. I asked him to turn it off and wait five minutes and then start it again. He did and it was back on E. I asked him to jiggle the key and see what happened. It is obviously loose and when he jiggled it the gauge shot up to F. So, I suggested he call a GM dealer and give them his VIN# and see if it's on the recall list. If not, he should get a new one from the local parts store of his choice and replace it. Am I right in thinking it could be the ignition switch causing the problem, or should we look elsewhere. Thanks for reading this long post and giving your opinions.