Still havnt contacted the Chev dealer yet,but I can buy a OEM remote start on Ebay,but after I installed it I would still have to take it to a GM dealer to get it programmed.I also see a pre programmed remote for sale by MPC(MyPushCart),but the description says it only works on gas models while the application chart says it also works on diesel models,emailed MPC but have not gotten a response.Has anyone ever dealt with MPC?