Mechanics

KEY FOB REPROGRAMMING

2007 Hummer H3 • 5 cylinder 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.


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Hummerh3guy123
April 4, 2011.



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.

Factoryjack
Apr 11, 2011.