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January 1, 2014 Service bulletin

Shudder Feeling While Driving in 40-80 km/h (25-50 mph) Range Condition/Concern Some customers may comment...

Cadillac technical service bulletin PI1155 for 2013-2014 Cadillac Ats.

Bulletin number
PI1155
Component
Power train: automatic transmission
Summary
Shudder Feeling While Driving in 40-80 km/h (25-50 mph) Range Condition/Concern Some customers may comment on a shudder feeling when driving, typically in the 40-80♦km/h (25-50♦mph) range. They may state that the condition feels like an engine misfire or like the car is driving over rumble strips on the road. This condition may be caused by a torque converter clutch (TCC) apply shudder.

Owners of these vehicles have filed 76 complaints in the transmission category.

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