Chevrolet Express 2000–2001 — technical service bulletin
Bulletin 3047 · NHTSA communication 10009392 · issued Jan 1, 2004
Technical service bulletin
communication type
Power Train
component
2000–2001
model years
12
vehicle entries
Official summary
Harsh tcc apply and or a diagnostic trouble code p1870. 4l80e automatic transmission. *tt
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.