September 11, 201610 yr comment_706287 3 speed auto won't shift up to 3rd gear, occasionally. Once every couple months. Oil seems fine. Happened halfway up the coast and went through half a tank of fuel getting home. Any clues? Report
September 11, 201610 yr comment_706289 Maybe a vacuum line. It's all here anyway. http://holdenpaedia.oldholden.com/Trimatic_Faults Report
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