I have a 08 Tahoe LTZ and its been in the shop 3 times for the same problem. Especially when I'm at a 1/4 tank and going down a hill the gauge goes to 0 and the low fuel starts beeping. It will go back up eventually but it is a real pain in the ass. The last time in the shop he said he replaced the sending unit but first hill I went down same thing!!!
Any ideas???
Any ideas???