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2018 GMC Sierra Key Fob Programming

Updated 2026 Programming, battery & replacement fob

The 2018 GMC Sierra key fob can't be programmed at home — it needs a locksmith or dealer with a diagnostic tool. Below is the exact replacement fob you need (FCC ID and part number) and what to expect.

Professional programming required

This remote can't be programmed with a do-it-yourself procedure. The vehicle needs a diagnostic tool connected to its OBD port to pair a new remote, so a replacement has to be set up by an automotive locksmith or a dealer.

Order the correct replacement remote below — match the FCC ID on your current fob first — then have a local automotive locksmith or the dealer program it to your vehicle.

Replacement key fobs

Find your key type below, then match the FCC ID printed on the back of your existing fob — or, for a plain transponder key, the blank code — to be sure of the right part.

Remote

2 versions

A separate key fob that only handles locking and unlocking.

2018 GMC Sierra 3/4-button Remote, FCC ID M3N-32337100

3/4-button Remote

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FCC ID
M3N-32337100
OE part #
13577770, 13577771, 13580082, 22859392, 22859409, 22881478 +2 more
Frequency
315 MHz
2018 GMC Sierra 4-button Remote, FCC ID M3N-32337200

4-button Remote

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FCC ID
M3N-32337200
OE part #
13577763, 13577764, 22881479, 84540863, RKE-GM-4B11
Frequency
433 MHz

Photos show the OEM part for each number listed. Aftermarket replacements sold online are often slightly different in appearance — the FCC ID, not the shape, is what determines whether a fob will work with your car.

2018 GMC Sierra key fob battery

Your 2018 GMC Sierra key fob uses a CR2032 3V lithium coin cell. A fresh one typically lasts 3–5 years.

Find CR2032 batteries on Amazon

How to replace the battery

  1. 1 Find the seam or small slot on the edge of the remote.
  2. 2 Twist a coin or small flathead in the slot to split the case open.
  3. 3 Remove the old coin cell and note the + side.
  4. 4 Fit the new battery with the + side matching, then close the case.
  5. 5 Press a button to confirm the LED lights, then test at the car.

Battery tips

  • Use a fresh, name-brand 3V lithium cell — bargain cells drain quickly.
  • Try not to touch both faces of the new battery; skin oils shorten its life.
  • If the remote still doesn't work after a new battery, it may need re-syncing or programming.

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See what it actually costs, broken out by dealer, locksmith, and DIY:

Key fob programming cost Car key replacement cost