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March 4, 2025 Service bulletin

This bulletin advises the technician to flush the cooling system multiple times if oil has been found in...

Chevrolet technical service bulletin 25-NA-052 for 2012-2025 Chevrolet Malibu, 2012-2025 Chevrolet Silverado 1500 and 2012-2020 Chevrolet Impala and others.

Bulletin number
25-NA-052
Component
Engine
Summary
This bulletin advises the technician to flush the cooling system multiple times if oil has been found in the cooling system and replace the parts that may be contaminated due to oil in system.

Owners of these vehicles have filed 18,407 complaints in the engine category.

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