Hummer Forums by Elcova - Tranny jerks around 75MPH

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410225

02-07-2011 05:43 AM

Tranny jerks around 75MPH

2007 H2 with 64k mi. I have been commuting between IL and MI (360mi). I was on 94 cruising around 75mph, all of a sudden tranny jerks! It almost feels like up or downshift, but it wasn't. This happened twice. What could be causing this? Does GM powertrain warranty 100k mi cover the transmission?

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