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88,000 kilometres on a 2016 ATS with six weeks of consistent but non progressive symptoms is a reasonably encouraging starting point for a repair conversation because it suggests something specific has developed rather than accumulated wear reaching a critical threshold across multiple components simultaneously. Cadillac specific… Read more

The incline specific nature of your symptom is actually useful diagnostic information rather than just a driving condition that reveals a general problem because it tells a specialist that the fault is something which performs adequately under normal load but loses proper function when demand increases beyond what flat steady speed… Read more

Had almost identical grade specific hunting on a GM eight speed unit about eighteen months ago and the diagnosis came back as a pressure control solenoid that was performing within acceptable range on flat roads but falling outside specification when the transmission was under the additional load that uphill driving creates. That kind… Read more

That hunting behavior specifically on inclines with flat road driving feeling completely normal is actually a pretty classic symptom of the throttle position or vehicle speed sensor feeding inconsistent data to the transmission control module rather than a mechanical fault inside the gearbox itself. A specialist with GM eight speed… Read more