Lost your key fob or need to program a new one for your 2008 GMC Sierra? Don’t worry, programming your key fob can be done easily at home without a trip to the dealership. This guide provides simple, step-by-step instructions for programming your 2008 Gmc Sierra Key Fob, ensuring you regain seamless access to your vehicle. Whether your Sierra has a driver information center or not, we’ve got you covered with two straightforward procedures.
Procedure #1: For GMC Sierras With Driver Information Center
This method applies to 2008 GMC Sierra models equipped with a driver information center. You can identify this by checking for buttons with an “i” symbol on your steering wheel.
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Ignition Activation: Insert your key into the ignition. Turn the key to the “on” position. It’s crucial not to start the engine, just turn the ignition to the point where the electrical systems are active.
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Accessing Relearn Remote Key Menu: Locate the “Information” button on your steering wheel. Press this button repeatedly until the display in your instrument panel shows “Relearn Remote Key”. This menu is your gateway to initiating the key fob programming sequence.
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Initiate Learning Mode: Once “Relearn Remote Key” is displayed, press the “set/reset” button. This button is usually marked with a checkmark symbol. Press it until the display changes to “Remote Key Learning Active”. The vehicle is now in programming mode, ready to learn the signal from your key fob.
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Key Fob Programming: Take the key fob you wish to program. Simultaneously press and hold down the “Lock” and “Unlock” buttons on the fob. Continue holding both buttons until the vehicle emits two chimes. These chimes confirm that the key fob has been successfully programmed.
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Programming Additional Remotes: If you have more key fobs to program, including existing ones, repeat step 4 immediately for each fob. It’s important to program all desired remotes in this step because programming a new fob can sometimes erase previously programmed ones.
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Exit Programming Mode: Turn the ignition key back to the “off” position. This action will exit the key fob programming mode. Test all programmed key fobs to ensure they are working correctly with your 2008 GMC Sierra.
Procedure #2: For GMC Sierras Without Driver Information Center
If your 2008 GMC Sierra doesn’t have a driver information center, use this procedure to program your key fob.
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Ignition Activation: Insert the key into the ignition and turn it to the “On” position, without starting the engine.
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Accessing Relearn Remote Key: Locate the trip odometer reset button, typically found on the instrument panel near the odometer display. Press and release this button repeatedly until “Relearn Remote Key” is displayed in the instrument cluster.
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Initiate Learning Mode: Press and hold the trip odometer reset button down until the display changes to “Remote Key Learning Active”. Keep holding the button until this message appears to enter the programming state.
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Key Fob Programming: Take the key fob you are programming and press and hold both the “Lock” and “Unlock” buttons simultaneously. Hold them until the vehicle chimes twice. These chimes indicate successful programming of the key fob.
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Programming Additional Remotes: For each additional key fob, including any previously working fobs, repeat step 4 right away. This step ensures all your remotes are recognized by the vehicle.
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Exit Programming Mode: Turn the ignition key to the “Off” position. This will automatically exit the programming mode. Verify that all programmed key fobs are now functioning with your 2008 GMC Sierra.
Important Note: If any of your existing key fobs stop working after programming a new one, it means you need to reprogram all of your key fobs during the same programming session (as outlined in step 4 of each procedure).
By following these procedures, you can easily program your 2008 GMC Sierra key fob and enjoy the convenience of keyless entry once again.
