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October 17, 2019 Service bulletin

Engine and engine cooling

Chevrolet technical service bulletin PIP5370E for 2020 Chevrolet Silverado 1500, 2018-2019 Chevrolet Equinox and 2020 GMC Sierra 1500 and others.

Bulletin number
PIP5370E
Component
Engine and engine cooling
Summary
This Preliminary Information communication provides information to the technician that some vehicle may have an ?Exhaust Fluid Quality Poor? on the Driver Information Center or a diesel exhaust fluid warning lamp on or other exhaust fluid quality related concerns. Technician will inspect the diesel exhaust fluid for contamination. Technician should use Service Information for Contaminants in Diesel Exhaust Fluid Diagnosis and use special tool J26568 or EN50422 Diesel Exhaust Fluid Refractometer for fluid testing.

Owners of these vehicles have filed 1,821 complaints in the engine category.

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