Is your 2008 GMC Sierra key fob malfunctioning, or did you recently replace it? Luckily, programming a new or existing key fob for your 2008 GMC Sierra is a straightforward process you can accomplish right at home. This guide provides you with clear, easy-to-follow instructions to get your key fob working again in no time. Whether your Sierra is equipped with a Driver Information Center or not, we have you covered with both programming procedures.
Procedure #1: For Vehicles With Driver Information Center
This procedure applies to 2008 GMC Sierra models that have a Driver Information Center (DIC). You can identify this by looking for buttons with an “i” symbol on your steering wheel controls.
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Ignition On: Insert your key into the ignition and turn it to the “on” position. Do not start the engine.
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Access Relearn Remote Key: Press the Information button on your steering wheel repeatedly until you see “Relearn Remote Key” displayed on the DIC screen.
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Initiate Learning Mode: Press the set/reset button (this button usually has a checkmark symbol) until the DIC displays “Remote Key Learning Active”. The vehicle is now in programming mode.
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Program Key Fob: Immediately press and hold both the Lock and Unlock buttons simultaneously on the key fob you are programming. Continue holding until the vehicle’s system chimes twice. This chime confirms successful programming of that key fob.
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Program Additional Remotes (If Necessary): If you have additional key fobs (new or existing) that you want to program, repeat step 4 for each one. It’s crucial to program all your key fobs during this step, as any previously programmed fobs not included now will no longer work.
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Exit Programming Mode: Turn the ignition key to the “off” position. This will exit the key fob programming mode. Test all programmed key fobs to ensure they are working correctly.
Procedure #2: For Vehicles Without Driver Information Center
If your 2008 GMC Sierra does not have a Driver Information Center, use this procedure to program your key fob.
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Ignition On: Insert the ignition key and turn it to the “on” position, without starting the engine.
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Access Relearn Remote Key: Press and release the trip odometer reset button repeatedly until “Relearn Remote Key” is displayed in the instrument panel.
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Initiate Learning Mode: Press and hold the trip odometer reset button until “Remote Key Learning Active” appears. The vehicle is now ready to learn the key fob signal.
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Program Key Fob: Press and hold the Lock and Unlock buttons at the same time on the key fob you are programming. Hold the buttons until the vehicle chimes to signal successful programming.
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Program Additional Remotes (If Needed): To program more key fobs, repeat step 4 for each additional remote. Remember to program all desired key fobs (both new and old) at this time.
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Exit Programming Mode: Turn the ignition key to the “off” position to exit the programming sequence. Verify that all programmed key fobs are functioning as expected.
Important Note: It is essential to program all of your key fobs during a programming session. If you only program a new key fob and skip reprogramming existing ones, the un-programmed remotes will cease to function with your 2008 GMC Sierra.
By following these procedures, you can easily program your 2008 GMC Sierra key fob and regain full remote access to your vehicle. If you encounter any difficulties or prefer professional assistance, you can search online for local key fob programming services in your area.
