PIP5370B

Service Bulletin Details

Public Details for: PIP5370B

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 e


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Bulletin No.: PIP5370B
Published date: 09/6/2017
Preliminary Information
PIP5370B Diagnostic Tip - Diesel Exhaust Fluid System Contamination
Models
Brand:
Model:
Model Years:
VIN:
from
Engine:
to
Transmissions:
Chevrolet
Cruze
2014 - 2016
All
All
2.0 LUZ
All
Chevrolet
Cruze
2017 - 2018
All
All
1.6 LH7
All
Chevrolet
Equinox
2018
All
All
1.6 LH7
All
Chevrolet
Express
2010 - 2016
All
All
6.6 LGH and LML
All
Chevrolet
Express
2017
All
All
2.8 LWN
All
Chevrolet
Silverado
2010 - 2018
All
All
6.6 L5P, LGH and LML
All
GMC
Savana
2010 - 2016
All
All
6.6 LGH and LML
All
GMC
Savana
2017
All
All
2.8 LWN
All
GMC
Sierra
2010 - 2018
All
All
6.6 L5P, LGH and LML
All
GMC
Terrain
2018
All
All
1.6 LH7
All
Supersession Statement
This PI was superseded to update Models and Model Years. Please discard PIP5370A.
The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.
Condition / Concern
A dealer may encounter a customer's concern of an exhaust fluid quality poor message on the Driver Information Center (DIC), a diesel
exhaust fluid warning lamp on or other exhaust fluid quality related concerns.
Recommendations / Instructions
During inspection of the diesel exhaust fluid (DEF) system and it's components, the dealer may find or suspect contamination.
Always refer to Service Information for Contaminants in Diesel Exhaust Fluid Diagnosis and use special tools J26568 Coolant and
Battery Fluid Tester or EN50422 Diesel Exhaust Fluid Refractometer for fluid testing.
Below are examples of DEF mixed with different sources of contamination.
Diesel Exhaust Fluid (DEF) mixed with Brake Fluid.
Diesel Exhaust Fluid (DEF) mixed with Dexcool.
Diesel Exhaust Fluid (DEF) mixed with Diesel Fuel.
Diesel Exhaust Fluid (DEF) mixed with Engine Oil.
Diesel Exhaust Fluid (DEF) mixed with Power Steering Fluid.
Diesel Exhaust Fluid (DEF) mixed with Transmission Fluid.
Diesel Exhaust Fluid (DEF) mixed with Windshield Washer Fluid.
Diesel Exhaust Fluid (DEF) mixed with Water.
Warranty Information
This PI is being published to help technicians identify signs of contamination in Diesel Exhaust Fluid (DEF). If you see evidence of
contamination take appropriate measures to ensure that all of the contaminated fluid is removed from the vehicle. Any components
that have failed as a result of contamination should NOT be covered by warranty.
Please follow this diagnostic or repair process thoroughly and complete each step. If the condition exhibited is resolved
without completing every step, the remaining steps do not need to be performed.
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