Chevrolet Silverado 2500 2016–2021 — technical service bulletin
Bulletin PIT5544D · NHTSA communication 10190362 · issued Mar 5, 2021
Technical service bulletin
communication type
Steering
component
2016–2021
model years
12
vehicle entries
Official summary
This Preliminary information communicates information on a hydrauilc rush type noise from the power steering gear. This noise is a characteristic of the new Active Hydraulic Assist System RPO NV8 and no repairs should be made. The noise is most noticeable in the cab at idle, in park, with all accessories turned off.
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.