Question about 2004 Buick LeSabre

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Intermittant Engine jerking in reverse or just running up hills

I've had the engine checked by a reputable local garage, No check engine light, no codes. Replaced all sparkplugs and wires. Passes all engine tests. Changed tranmission fluid and filters. Passed all tranmission tests. Changed gas filters yet problem persists except when in the shop. Any ideas.
Are there sensors that may be causing this? Appreciate any and all help resolving.

Thanks, Skip

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I believe that either the trnas control module is malfuntioning or you have a sticking valve body in the transmission

Posted on Sep 26, 2008

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