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2007 Hummer H3 Key fob reprogramming

Tiny
HUMMERH3GUY123
  • MEMBER
  • 2007 HUMMER H3
  • 5 CYL
  • AWD
  • AUTOMATIC
  • 41 MILES
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.
Monday, April 4th, 2011 AT 7:50 PM

1 Reply

Tiny
FACTORYJACK
  • MECHANIC
  • 4,159 POSTS
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.
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Monday, April 11th, 2011 AT 4:41 AM

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