GMC Sonoma key fob battery
8 of the 9 model years listed for the GMC Sonoma 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.
- 1996Remote (separate)
2 x CR2016
Owner's manual: manualowl.com (checked Nov 1, 2026)
Manual text: “replace the batteries with two Duracell-type batteries (DL2016 or equivalent)”
Find CR2016 on Amazon - 1997-1998Remote (separate)
CR2032
Owner's manual: manualowl.com (checked Nov 1, 2026)
Manual text: “Remove and replace the battery with a Panasonic-type battery (CR2032 or equivalent)”
Find CR2032 on Amazon - 1999-2002Remote (separate)
CR2032
FCC ID KOBUT1BTTwo sites agree: uhs-hardware.com and keylessentryremotefob.com (checked Nov 1, 2026)
Find CR2032 on Amazon - 2001-2002Remote (separate)
Not confirmed yet
- 2003Remote (separate)
CR2032
FCC ID KOBLEAR1XTOwner's manual: americankeysupply.com and assets.gm.com (checked Nov 2, 2026)
Manual text: “three volt CR2032 or equivalent battery, positive (+) side up.”
Find CR2032 on Amazon - 2004Remote (separate)
Not confirmed yet
Changing the battery
Separate remote fob
- A separate fob has no key blade inside, so it opens with nothing but a coin or a small screwdriver.
- Find the slot along the edge and turn a coin in it. Go slowly so the clips do not snap.
- Lift the old coin cell out and press the new one in with matching orientation.
- Reassemble and test from a short distance.
This key takes two CR2016 cells. Change both at the same time and stack them the way the old pair sat; mixing a fresh cell with a tired one shortens the life of the new one.
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.
If a child might have swallowed a coin cell, treat it as an emergency and get to a hospital right away.