GMC TSB #20NA166

2017 GMC Sierra 2500

TSB Document:

Affected Component: ENGINE AND ENGINE COOLING:COOLING SYSTEM:HOSES/LINES/PIPING/FITTINGS

Summary
This informational bulletin advises the technician of possible coolant entering the areas of the engine, either through failed parts or defects in the castings, that may be the cause of the concerns related to the MIL or the engine running rough.

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Date Published
DEC 09, 2021
NHTSA TSB #
10212560
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