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I have a 12/2000 grandure, it sticks in 3rd gear of the auto trans, but only when it has warmed up, u can reset it by stopping turning the ignition off and re starting, but only until it hits third gear again, any ideas ?? regards craig

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Time for a gearbox oil change. As the oil gets older it breaks down and that means it heats up too quickly, meaning it will not allow the auto to change gears properly. As you have switched the engine off and restarted it tricks the ECU into thinking that the gearbox oil is cold until it reaches too high levels.

Change the oil soon as an auto box rebuild isn't cheap.

Hope this helps.

Posted on Apr 04, 2011

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Posted on Jan 02, 2017

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