Chevrolet Silverado 2017–2018 — technical service bulletin
Bulletin PIP5510B · NHTSA communication 10123221 · issued Oct 3, 2017
Technical service bulletin
communication type
Equipment
component
2017–2018
model years
4
vehicle entries
Official summary
This Preliminary information communicates to the dealer technicians aprocedure to determine if the vehicle'sSCR system is healthy.
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.