Chevrolet Silverado 2001–2002 — technical service bulletin
Bulletin 020730020 · NHTSA communication 634959 · issued May 1, 2002
Technical service bulletin
communication type
Power Train
component
2001–2002
model years
4
vehicle entries
Official summary
Some customers may comment of harsh or delayed 2-1 downshift, neutral feel at a stop, shift busyness, diagnostic trouble codes p0708, p0847, p0872, p0875, p1711, p1713 from 3/4 and 1 ton pickup models. *tt
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.