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2011 Buick LaCross timing chain replacement .

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Hi Scotty , I have 2011/ Buick/ La Cross CSX , w/90,000miles ,  3.6 L 6cyl , automatic transmission . The engine's timing chain is known to be a problem .  When should I replace the timing chain ? Thank you !

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I would change the timing chain when the engine is seriously misfiring. If your car runs fine, leave it alone.

Thank you VERY MUCH !!!!

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