2014 Chevrolet Silverado 3500HD Key Fob Programming Guide

As an ASE-certified electrical technician and locksmith, I get a lot of questions about key fobs for heavy-duty GM trucks. The 2014 Chevrolet Silverado 3500HD is a robust workhorse, but when it comes to key and remote programming, it falls into a transition period for General Motors. Unlike earlier models that allowed you to program remotes yourself using the dashboard display, the 2014 Silverado 3500HD requires professional equipment for the key fob.

Here is everything you need to know about replacing, programming, and maintaining the key fob and transponder key for your 2014 Chevrolet Silverado 3500HD.

Quick reference

Step-by-step on-board programming

If you are hoping to program the keyless entry remote (fob) for your 2014 Silverado 3500HD in your driveway without tools, I have some bad news. General Motors removed the on-board Driver Information Center (DIC) remote programming feature starting with the 2011 model year.

Because your 2014 3500HD does not support DIY remote programming, you cannot just cycle the key or press dashboard buttons to sync a new fob. The vehicle's Body Control Module (BCM) must be put into programming mode using a bidirectional OBD2 scan tool.

How it is programmed by a professional:

1. A technician connects a diagnostic scan tool (such as a Tech2, Autel, or GM GDS2) to the vehicle's OBD2 port under the driver's side dash.
2. The technician navigates to the BCM menu and selects "Add Remote Keyless Entry."
3. The scan tool commands the vehicle to enter programming mode (door locks will usually cycle to confirm).
4. The technician presses and holds the Lock and Unlock buttons on the new key fob until an acoustic chime sounds or the door locks cycle again.
5. This process is repeated for any additional remotes (including existing ones, which must be relearned during the same session).
6. The scan tool is used to exit programming mode.

Note: While the remote cannot be programmed DIY, the physical ignition key (Circle Plus PK3+ transponder) CAN be programmed on-board if you already have one working key.

Battery replacement

If your current fob is acting up, a dead battery is the most common culprit. Replacing it is simple and does not erase the fob's programming.

1. Locate the seam: Look for the small notch or seam along the side of the plastic key fob case.
2. Pry it open: Insert a flathead screwdriver or a coin into the notch and gently twist to separate the two halves of the shell.
3. Remove the old battery: Note the orientation of the battery (the positive "+" side should be facing down against the back cover). Carefully pop the old battery out.
4. Insert the new battery: Place a fresh CR2032 battery into the slot, ensuring the positive "+" side is facing the correct direction.
5. Reassemble: Snap the two halves of the plastic shell firmly back together. Test the buttons to ensure proper operation.

Where to buy a replacement fob

When sourcing a replacement, you have three main avenues:

• The Dealership: Going to a Chevy dealership guarantees you get an OEM part (PN 15913421 or 20869057). However, it is the most expensive route. Expect to pay $150 to $250 for the part and programming labor.
• A Local Locksmith: Automotive locksmiths stock both OEM and high-quality aftermarket fobs. They have the required scan tools and usually charge between $100 and $150, often coming straight to your location.
• Amazon or eBay: You can find aftermarket remotes online for $15 to $30. The pro is the extremely low upfront cost. The con is that you still have to pay a locksmith or a shop to program it (usually $50-$75), and some shops refuse to program customer-supplied parts due to quality control issues with cheap electronics.

If on-board programming isn't supported

Since your 2014 3500HD requires a scan tool for the fob, expect to pay a minimum of $50 for labor if you bring your own remote to a shop.

Keep in mind that the fob and the ignition key are two separate components on this truck. The ignition key uses a Circle Plus (PK3+) immobilizer transponder. If you lose all your keys, a locksmith will need to cut a new key blade from scratch using your VIN or door lock code, and then use their programmer to force the vehicle's immobilizer into a relearn state—a process that takes about 15-30 minutes.

To save money and time, always keep a spare key and fob in a safe place.

Find a mobile locksmith or shop on Repairius.