2007 Hummer H3 Key fob reprogramming

2007 HUMMER H3
41 MILES • 5 CYL • AWD • AUTOMATIC
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HUMMERH3GUY123
  • MEMBER
  • 1 POST
I recently had my battery replaced and everything on the key fob works except the auto start and trunk opener. I want to know if I can reprogram it myself without taking it to a shop or dealer.
Apr 4, 2011 at 7:50 PM
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FACTORYJACK
  • ✓ASE Certified Mechanic
  • 4,159 POSTS
  • ASE Certified Mechanic
It sounds like you have an aftermarket system, as there was no remote start feature on your H3 from the factory. A factory transmitter should only have lock, unlock, and a panic button. A factory keyless transmitter is programmed using a scan tool.
Apr 11, 2011 at 4:41 AM
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