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About ATfore

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  1. Hi everyone, new member here and I put a deposit on an AT4 w/3.0 that should arrive at the dealership in a week or so. Anyway, researching various issues with the engine it seems that most are associated with the exhaust system, whether it’s leaks allowing exhaust gases into the cabin or something related to emission controls. Browsing through the gym-techlink website, when issues with the exhaust system are suspected then GM recommends doing an exhaust system leak test. Some users have reported sysmptoms very shortly after taking delivery. so my question is: does GM perform any ty
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