Chevrolet Sierra 2000–2002 — technical service bulletin
Bulletin 200801 · NHTSA communication 625114 · issued Aug 20, 2001
Technical service bulletin
communication type
Power Train
component
2000–2002
model years
12
vehicle entries
Official summary
Information regarding revised transmission calibration to address driveline growl or prop shaft ring noise. *jg
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.