A review of GMC emergency start processes for 2025 and 2026 models finds three new emergency back-up start processes.
These processes are necessary in the event that the battery in the key fob dies or if there are radio signal interfering with the fob.
In what has to be a true frustration for GMC drivers, the company now has a full dozen emergency start transmitter slots for its models.
In this round, we added a new slot for Sierra 2500/3500 (right) heavy duty models and another for the Sierra EV (far right).
Its true that both of these use the left side cup holder, the center console configurations are very different and warrant separate consideration.
Sierra models alone now use five different back-up slots.
The other new offering belongs to the 2025 Terrain. This “slot” is simply a spot on the console just above the cup holders (right). There is a small marking on the spot.
The material on these pages is provided for information sharing purposes only and should not be used in lieu of an OEM service manual or factory authorized service procedure. We are not in the auto repair business, nor do we publish automotive service manuals. Nothing we include on these pages and posts has been reviewed, approved or authorized by any vehicle manufacturer.
Remember — only proper service and repair procedures will ensure the safe and reliable operation of your car. In addition, proper safety procedures and precautions, such as the use of safety goggles, the right tools and the equipment should be followed at all times to eliminate the possibility of personal injury or improper service which could damage the vehicle or compromise its safety.
Technology is always changing and what is current and accurate today may be literally out-of-date and inaccurate tomorrow. And when it comes to the current state of flux in the auto industry, nothing is more true.
The author has 30+ years of automotive experience and has assembled the most extensive collection of symbols and warning lights anywhere (over 1,000!) and can help you open and start any keyless start car with a dead key fob battery. BA, St. Joseph’s, ME: MS, RPI, NY
Three new GMC emergency start processes added
A review of GMC emergency start processes for 2025 and 2026 models finds three new emergency back-up start processes.
These processes are necessary in the event that the battery in the key fob dies or if there are radio signal interfering with the fob.
In what has to be a true frustration for GMC drivers, the company now has a full dozen emergency start transmitter slots for its models.
Its true that both of these use the left side cup holder, the center console configurations are very different and warrant separate consideration.
The other new offering belongs to the 2025 Terrain. This “slot” is simply a spot on the console just above the cup holders (right). There is a small marking on the spot.
All of GMC‘s emergency start options can be seen on this page.
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The material on these pages is provided for information sharing purposes only and should not be used in lieu of an OEM service manual or factory authorized service procedure. We are not in the auto repair business, nor do we publish automotive service manuals. Nothing we include on these pages and posts has been reviewed, approved or authorized by any vehicle manufacturer.
Remember — only proper service and repair procedures will ensure the safe and reliable operation of your car. In addition, proper safety procedures and precautions, such as the use of safety goggles, the right tools and the equipment should be followed at all times to eliminate the possibility of personal injury or improper service which could damage the vehicle or compromise its safety.
Technology is always changing and what is current and accurate today may be literally out-of-date and inaccurate tomorrow. And when it comes to the current state of flux in the auto industry, nothing is more true.
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The author has 30+ years of automotive experience and has assembled the most extensive collection of symbols and warning lights anywhere (over 1,000!) and can help you open and start any keyless start car with a dead key fob battery. BA, St. Joseph’s, ME: MS, RPI, NY