Chevrolet Silverado 2001–2002 — technical service bulletin

Bulletin 020730051A · NHTSA communication 10001116 · issued Feb 1, 2003

Technical service bulletin

communication type

Power Train

component

2001–2002

model years

vehicle entries

Official summary

Transmission shifting in and out of 4th and 5th gear (hunting) when pulling/carrying a load, unable to manually select 4th gear. *tt

Vehicles covered

2001 Chevrolet Silverado
2002 Chevrolet Silverado
2001 GMC Sierra
2002 GMC Sierra

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.