Question about Hummer H3
I have the same problem. Been back and forth with the dealer and GM. Everyone knows this is a problem but Hummer will not reprogram the computer. It was suggested to me to get a vortex to adjust the computer shift points but the unit is $400 and will void your warranty. Sucks big time
Posted on Oct 29, 2009
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Posted on Jan 02, 2017
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