Chevrolet Silverado 2001–2002 — technical service bulletin
Bulletin 020730011A · NHTSA communication 634961 · issued May 1, 2002
Technical service bulletin
communication type
Power Train
component
2001–2002
model years
4
vehicle entries
Official summary
Diagnostic information for possible gear indicator (prndl) concerns for vehicles with allison lct1000 automatic transmission. *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.