Chevrolet Express 2010–2011 — technical service bulletin
Bulletin PIP4887B · NHTSA communication 10112047 · issued May 1, 2014
Technical service bulletin
communication type
Engine and Engine Cooling
component
2010–2011
model years
10
vehicle entries
Official summary
This Preliminary Information communication provides information to the technician about vehicles that have a "Service Exhaust Fluid System" and a "See Owner's Manual Now" message displayed on the Instrument Panel Cluster. Technician may find reductant level sensor Diagnostic Trouble Codes P203D, P21AB, and P21B0 set. Technician will need to follow published Service Information diagnostics for the Diagnostic Trouble Codes that are set. If no wiring concerns are found replace the Diesel Exhaust Fluid tank assembly.
Vehicles covered
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.