2003 Hummer H2FACTORY OEM SERVICE PROCEDURE

Removal Procedure

WARNING: This page is about a different car, the 2004 Hummer H2. However, it is still accessible from the selected car via links, so may be relevant.

Under normal use, the battery in the transmitter will last about 2 years, form battery replacement, use a Panasonic 3 volt, type CR2032, or the equivalent.

  1. In order to open the transmitter case, perform the following steps:
    1. Insert a dime between the two halves of the transmitter near the key ring hole.
    2. Fig 1: Opening Transmitter Case
      GM264911Courtesy of GENERAL MOTORS CORP.
    3. Twist the dime.
  2. Fig 2: Transmitter Battery
    GM396875Courtesy of GENERAL MOTORS CORP.
  3. Remove the battery.
Factory Service Tools

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.

Rather have a pro handle this?

A certified mobile mechanic comes to your home or office. They bring the tools, you stay comfortable. No tow truck, no waiting room, no surprises.

Comes to youSame-day available12-month warranty
Get a Free Quote

No obligation. See pricing before you book.