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July 29, 2016 Service bulletin

Customer Satisfaction Program

GMC technical service bulletin GCUS-3-632 for 2016 GMC Sierra 1500, 2016 Chevrolet Silverado 2500 and 2016 Cadillac CT6.

Bulletin number
GCUS-3-632
Component
Engine and engine cooling
Summary
44120 - Customer Satisfaction Program - Certain vehicles, equipped with an 8-speed automatic transmission, may have a condition in which the 2-3-4-6-8 Clutch Piston is out of specification. Parts as installed exhibited a crack condition as cast after machining. As a result the vehicle could exhibit 1-2 upshift slipping or a flaring condition.

Owners of these vehicles have filed 51 complaints in the engine category.

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