carfobbattery

GMC Sierra 1500 key fob battery

10 of the 11 model years listed for the GMC Sierra 1500 have a proven battery. The most common answer is CR2032. Rows below run oldest to newest; a year can appear twice when the car came with more than one kind of key.

  1. 2016Remote (RKE transmitter, single manual section)

    Not confirmed yet

  2. 2017Remote (RKE transmitter, single manual section)

    CR2032

    Owner's manual: gmc.com (checked Nov 1, 2026)

    Find CR2032 on Amazon
  3. 2018Remote (RKE transmitter, single manual section)

    CR2032

    Owner's manual: gmc.com (checked Nov 2, 2026)

    Manual text: “Replace with a CR2032 or equivalent battery.”

    Find CR2032 on Amazon
  4. 2019-2021Remote key (Key Access)

    CR2032

    Owner's manual: contentdelivery.ext.gm.com (checked Nov 1, 2026)

    Find CR2032 on Amazon
  5. 2019-2020Smart key (Keyless Access)

    CR2032

    Owner's manual: contentdelivery.ext.gm.com (checked Nov 1, 2026)

    Find CR2032 on Amazon
  6. 2021Smart key (Keyless Access)

    CR2032

    Owner's manual: contentdelivery.ext.gm.com and gmc.com (checked Nov 2, 2026)

    Manual text: “Keyless Access: Replace with a CR2032 or equivalent battery.”

    Find CR2032 on Amazon
  7. 2022Remote key (manual does not split key types)

    CR2032

    Owner's manual: contentdelivery.ext.gm.com (checked Nov 1, 2026)

    Find CR2032 on Amazon
  8. 2023-2026Remote key (manual does not split key types)

    CR2450

    Owner's manual: contentdelivery.ext.gm.com (checked Nov 1, 2026)

    Find CR2450 on Amazon

Changing the battery

Separate remote fob

  1. The remote is a small standalone unit. You will not need to touch the ignition key at all.
  2. Turn it over: some older fobs use one small screw, newer ones just clip. Pry at the seam once any screw is out.
  3. Replace the cell, keeping the + side where it was, and check the small metal tab still touches it.
  4. Snap the case shut and watch for the lights to flash when you press lock at the car.

A CR2032 is 20 mm across and 3.2 mm thick. CR2032, CR2025 and CR2016 share the same width but not the same thickness, so a swap between them can leave a loose contact or a case that will not close.

A CR2450 is 24.5 mm across and 5.0 mm thick, much fatter than a CR2032. A thinner cell will rattle and lose contact, so buy the exact size.

Smart key (push-button start)

  1. Most push-button fobs hide a metal backup key. Press or slide its catch and draw the key out first.
  2. Use the slot where the metal key sat. Twist, do not lever hard, and work along the seam until the halves separate.
  3. Before you take the old cell out, look at its face. Put the new cell in with the same side showing, and avoid touching both faces at once.
  4. Snap the halves back together, slide the metal key home, and press each button, then try the start button from the driver's seat.

On many recent GM smart remotes a button on the side releases the key; the slot at the bottom is where the case opens.

A CR2032 is 20 mm across and 3.2 mm thick. CR2032, CR2025 and CR2016 share the same width but not the same thickness, so a swap between them can leave a loose contact or a case that will not close.

Coin cells are a choking and burn hazard for children. Store the spares in their original pack, out of reach.

Other GMC models