carfobbattery

Chevrolet Blazer (S-10) key fob battery

Every model year listed for the Chevrolet Blazer (S-10) has 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. 1996Remote (separate)

    2 x CR2016

    FCC ID ABO0104T

    Owner's manual: carmanualsonline.info and americankeysupply.com (checked Nov 1, 2026)

    Manual text: “Duracell-type batteries (DL2016 or equivalent)... replace with two”

    Find CR2016 on Amazon
  2. 1997Remote (separate)

    CR2032

    FCC ID ABO1502T

    Owner's manual: carmanualsonline.info and uhs-hardware.com (checked Nov 1, 2026)

    Manual text: “replace the battery with a three volt CR2032 or equivalent battery”

    Find CR2032 on Amazon
  3. 1998Remote (separate)

    CR2032

    Owner's manual: carmanualsonline.info and manualowl.com (checked Nov 1, 2026)

    Manual text: “replace the battery with a three volt CR2032 or equivalent battery”

    Find CR2032 on Amazon
  4. 1999-2001Remote (separate)

    CR2032

    FCC ID KOBUT1BT

    Two sites agree: uhs-hardware.com and keylessentryremotefob.com (checked Nov 1, 2026)

    Find CR2032 on Amazon
  5. 2001-2005Remote (separate)

    CR2032

    FCC ID KOBLEAR1XT

    Two sites agree: uhs-hardware.com and bestkeysupply.com (checked Nov 1, 2026)

    Find CR2032 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. Look for a screw on the back or a notch on the edge. Remove the screw if present, then twist a coin in the notch to split the case.
  3. Lift the old coin cell out and press the new one in with matching orientation.
  4. 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.

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

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