rjenman Posted September 11, 2016 Report Share Posted September 11, 2016 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? Quote Link to comment Share on other sites More sharing options...
peterd Posted September 11, 2016 Report Share Posted September 11, 2016 Maybe a vacuum line. It's all here anyway. http://holdenpaedia.oldholden.com/Trimatic_Faults Quote Link to comment Share on other sites More sharing options...
LittleRedSpirit Posted September 12, 2016 Report Share Posted September 12, 2016 Could just be low on oil. Quote Link to comment Share on other sites More sharing options...
Clapped out Posted September 12, 2016 Report Share Posted September 12, 2016 sticky piston in your valve body...... Quote Link to comment Share on other sites More sharing options...
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