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Mike W (not verified)    March 26, 2025 - 3:26PM

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I have a 2019 Colorado and a 2018 camaro and they both have the 8 speed automatic transmission.(8L45 and 8L90) Both experienced road shutter "feels like driving on a rumble strip on the side of an interstate" Both had the transmission service and got better, but the truck still bucks when coming to a stop and then accelerating the shift is clunky. The camaro has 54,000miles and is currently getting the rear differential completely replaced. The dealer wanted $3200 for the repair.

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