The following procedure applies to most 2015 and newer Buick / Chevy / Cadillac vehicles equipped with keyless start.
You will need to perform this procedure if you have one key and want to add more key.
You can also use this procedure if you have lost all keys and are looking to program a new key.
Keep in mind that you will need to reprogram the old key and the new key by following the instructions in step 11.
What you will need
- Take off the metal key from the key fob by pressing on the back and pulling the metal part.
- To unlock the driver's door using a metal key, push up the cap that protects the key slot using the metal key. There is a hole at the bottom of the cap where you can insert the metal key and pry off the cap.
- Insert the metal key. Turn the key counter-clockwise 5 times.
- Open the driver's side door.
- The ECM will trigger remote learning mode, and the "Remote Learning Pending" message will be displayed on the instrument panel's LCD.
- Press the start button once.
- Set a timer to 10 minutes on your phone, then leave the vehicle and come back after 10 minutes.
- Once the timer goes off, get inside the vehicle and press the START button again.
- Repeat steps 7 and 8 two more times. In other words, it will take 30 minutes to get your vehicle ready for programming the new keys.
- Place the FOB key to the position required to program it; you may consult your manual to determine the exact position. In the Buick, the slot is inside the center console but on the Chevy vehicles, it may be in the cupholder.
- Press start again. The display will show key 1 programmed.
- If you have more than one key you want to program, place it in the center console and press start again. The vehicle will display the key 2 programs.
- Once you have programmed all keys, press the start button and hold for about 12 seconds to exit the key fob programming mode. If you skip this step none of the keys will work.
A key fob is the main device used in keyless entry systems. It contains a short-range radio transmitter, which sends a distinct coded signal to a receiver unit in the car when a button on the fob is pushed. These buttons are matched with instructions to either lock or unlock the vehicle door.
In addition to unlocking and locking the door, some key fobs, like Buick's fob, can be used to open the drunk or to start the engine remotely.
If you lost your fob key or got damaged, you can go to your dealer, buy a metal key and a new fob. Then, follow the instructions below to re-program your fob key.
Remote key fobs can become damaged in many ways, like water damage and physical damage being the most common, but when your car's onboard computer fails to recognize your key's unique code, you will need to reprogram it.
Frequently Asked Questions
Can I program a used key?
- Yes, as long as the key is compatible with your vehicle.
Why would a key need to be reprogrammed?
- Like anything, these keys can become damaged in many ways, water damage and physical damage being the most common, but when your car's ECU or ECM fails to recognize your key's unique code, you will need to have it reprogrammed.
How much does it cost to program a key fob?
- On average, programming a key fob will range anywhere from $40 to $100, depending on the make and model of the car. Most of the time, this can be done on your own, however, bringing down the costs.
How do you start a keyless car without a key fob?
- If your keyless entry works with a START button and theres no mechanical key slot, there's still a way to start the car. Use the key fob to push the START button. Some manufacturers have a backup system that allows this method to work if the key fob battery is dead.
These instructions apply to most GM vehicles from 2014 and up that has a keyless start. For example Buick Enclave, Cadillac XTS.