08 GMC Yukon won't start
my 08 Yukon has 92000 miles, recently its been having a problem starting. its not the battery or alternator. I had it towed to dealer said it didnt code for anything, towed it to another dealer and the problem happened there, so the dealer said they believed it to be fuel pump. I got the quote, but asked them to check the anti theft module, because of this forum, i had seen several post about the anti-theft malfunction causing truck not to start. Advisor said didnt believe it to be problem. I drove it home. day later I'm stuck again. Left truck, came back to get it about 8 hours later, it started. Same thing happened the next day, finally it wouldnt start again. so I had it towed again. Dealer says after several days, its the fuel pump for sure. Had them do the fuel pump 900 bucks, went to pick up truck, wont start......Dealer said give them a few more days. please help if anyone has had this issue.