Mechanics

MY TRUCK LOST ALL GEARS WHILE DRIVING WITHOUT WARNING. WILL NOT GO INTO ANY GEAR INCLUDING REVERSE. IS MY TRANNY COMPLETELY SHOT?

2007 GMC Sierra • 80,000 miles

There were no sounds at all, just stopped going and the engine was still running normally.
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JBlanche
June 26, 2012.



Most likely it has failed. You would need a diagnostic test to confirm.

KHLow2008
Jun 26, 2012.