2014 GMC Sierra 2500HD Key Fob Programming Guide

Quick reference

Step-by-step on-board programming

Good news for 2014 GMC Sierra 2500HD owners! Your truck supports on-board programming for additional key fobs. This means you can program new remotes yourself without needing special tools or a trip to the dealership.

Important: You must have at least one currently programmed and working key fob/remote to perform this procedure. If you do not have any working fobs, you will need a locksmith or dealer to program new ones using a scan tool.

1. Preparation: Gather all existing and new key fobs you wish to program. This procedure will erase all previously programmed fobs from the vehicle's memory, so you must program all of them at the same time.
2. Enter the vehicle: Close all doors. Insert the primary (working) factory key into the ignition.
3. Key Cycle: Turn the ignition to the "ON" position (do not start the engine) and then turn it back to "OFF." Repeat this ON/OFF cycle quickly three times.
4. Remote Unlock Button: Press and hold the "UNLOCK" button on the currently programmed key fob for about 15 seconds. The vehicle's door locks should cycle to confirm it has entered programming mode.
5. Program New Fobs: Within 5 seconds of the locks cycling, press and hold the "LOCK" and "UNLOCK" buttons simultaneously on the new (unprogrammed) key fob for about 15 seconds. The door locks should cycle again to confirm successful programming.
6. Repeat for Additional Fobs: If you have more fobs to program, repeat step 5 for each additional fob, one at a time, within 10 seconds of the previous fob's successful programming.
7. Exit Programming Mode: To exit programming mode, simply turn the ignition to the "ON" and then "OFF" position, or open any vehicle door. Test all key fobs to ensure they are working correctly.

Battery replacement

The key fob for your 2014 GMC Sierra 2500HD uses a single CR2032 coin cell battery. Replacing it is a straightforward process:

1. Separate the Fob: Locate the small slot or indentation on the side or bottom of the key fob case. You may need a small flat-head screwdriver or a coin to gently pry open the two halves of the fob.
2. Remove Old Battery: Carefully remove the old CR2032 battery. Note the orientation of the battery (which side is facing up/down) before removing it.
3. Insert New Battery: Insert the new CR2032 battery with the positive (+) side facing the same direction as the old battery.
4. Reassemble Fob: Snap the two halves of the key fob back together, ensuring they are securely fastened.
5. Test: Test your key fob to ensure it's functioning correctly.

Where to buy a replacement fob

When looking for a replacement key fob, you have a few options, each with its pros and cons:

• GM Dealership:
  • Pros: Guaranteed genuine OEM part, often comes with programming included. The key blade will be cut to your VIN.
  • Cons: Most expensive option. Expect to pay anywhere from $150 to $300+ for the fob, cutting, and programming.
• Automotive Locksmith:
  • Pros: Often a good balance of cost and convenience. Locksmiths can typically provide an OEM or high-quality aftermarket fob, cut the key blade, and program it on-site or at their shop. They often have more flexible scheduling than dealerships.
  • Cons: Prices can vary. Ballpark cost for a fob, cut, and programming is usually between $100 and $250.
• Online Retailers (e.g., Amazon, eBay, KeylessEntryRemote.com):
  • Pros: Cheapest option for the fob itself. You can find OEM or aftermarket fobs for as little as $20-$80.
  • Cons: You will still need to get the integrated key blade cut by a locksmith or hardware store (some hardware stores offer this service, but ensure they can cut "sidewinder" or "laser-cut" keys if applicable). If you don't have a working key to perform the on-board programming, you'll need to factor in the cost of a locksmith or dealer programming.

If on-board programming isn't supported

While your 2014 GMC Sierra 2500HD does support DIY on-board programming for adding additional remotes when you have at least one working key, situations can arise where this isn't possible. If you've lost all your keys or the on-board procedure doesn't work for some reason, you'll need professional assistance.

• Cost Expectations: If you need a locksmith or dealer to program your fobs using a scan tool when no working remotes are present, expect to pay for both the new key fob(s) and their programming service. This typically ranges from $150 to $350, depending on the number of fobs and whether a new key needs to be cut and coded to the vehicle's immobilizer system.
• Immobilizer Transponder: The key for your 2014 GMC Sierra 2500HD contains a transponder chip (often called an immobilizer chip). This chip communicates with your truck's immobilizer system, and if it's not correctly programmed, the vehicle will not start, even if the key blade fits the ignition. When a locksmith or dealer programs a new key fob, they also program this transponder chip to ensure the vehicle starts.

Find a mobile locksmith or shop on Repairius.