It is better not to park with the vehicle running. If the vehicle is left while running, follow the proper steps to be sure the vehicle will not move and there is adequate ventilation.
See Shifting Into Park and Engine Exhaust.
If the vehicle is left parked while running and the Remote Keyless Entry (RKE) transmitter is outside the vehicle, the vehicle will turn off after one hour. If the vehicle is left parked while running and the RKE transmitter is inside, the vehicle will turn off after two hours.
The timer will reset if the vehicle is taken out of P (Park) while it is running.
#07-00-89-037F: Warranty Administration - Courtesy Transportation and Roadside Assistance Programs - (May 6, 2013)
Subject:Warranty Administration – Courtesy Transportation and Roadside Assistance ProgramsModels: 2014 and Prior GM Passenger Cars and TrucksAttention: GM of Canada and IPC Service Agents are not authorized to utilize this service bulletin.GM of Canada Service Agents/retailers should refer to th ...