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Service bulletin 511027

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10160767
Published by NHTSA2019-06-28
Manufacturer's number511027
Manufacturer's date2019-06-04
NHTSA componentENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM

NHTSA's summary

Your Chevrolet Express or GMC Savana vehicle may be equipped with an improperly functioning on-board emission-related diagnostic system that violates California and Federal standards and regulations.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Electrical system, Engine

Vehicles listed
COACHMEN CONCORD2014
COACHMEN FREELANDER2013 to 2015
COACHMEN LEPRECHAUN2013 to 2015
FOREST RIVER SUNSEEKER2014 to 2015

Listing a model year does not mean every vehicle of it is concerned: the document says which.