One of the newer GM safety features is Extended Parking, which automatically shuts off a vehicle’s engine after a certain period of time while the vehicle is parked. The goal of the feature is to reduce emissions and prevent potential carbon monoxide poisoning in an enclosed space. However, some owners might wish to disable Extended Parking, thereby preventing a GM vehicle from shutting off the engine when parked.
The GM Extended Parking feature automatically shuts off the engine when the vehicle is parked for 20 minutes and the key fob is not present, or after an hour when the key fob is present.
Disabling the feature is accomplished by pressing and holding the engine/vehicle start button until the driver information center displays the message “automatic shutdown off.”
This doesn’t work on all GM vehicles, but more so on the newer ones, especially those running the automaker’s new Global B electronic architecture which first debuted on the 2020 Cadillac CT5, followed by the 2020 Cadillac CT4, Chevy Corvette C8, 2021 Buick Envision, and the 2021 Chevy Tahoe, 2021 Suburban, 2021 GMC Yukon and 2021 Cadillac Escalade.
GM began to implement the Extended Parking feature as a safety measure spurred by the introduction of keyless electronic ignition. The feature is now standard on 2019 model year and newer Chevrolet, Buick, GMC, and Cadillac models with keyless ignition, also known as push-button start.
Some cases where drivers would want to disable Extended Parking / automatic engine shutoff include:
- Leaving pets in the car with the A/C running on a hot day while tending to errands (though GM Authority does not recommend doing this)
- Leaving the engine running to keep the vehicle’s climate control system active for any other reason
- Waiting in extended lines for something like a COVID test
- Needing to keep the vehicle’s climate comfortable, such as when conducting surveillance or nature photography