Chevrolet Silverado 2017–2018 — technical service bulletin
Bulletin PIP5487C · NHTSA communication 10144421 · issued Aug 1, 2018
Technical service bulletin
communication type
Engine and Engine Cooling
component
2017–2018
model years
4
vehicle entries
Official summary
This Preliminary Information communication advises the technician on the steps to diagnosing the concern and the repair. Customer has Warning Lamps and/Or coolant leaks present.
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.