Chevrolet Express 1996–2002 — technical service bulletin
Bulletin 020604020 · NHTSA communication 634727 · issued May 1, 2002
Technical service bulletin
communication type
Unknown / Other
component
1996–2002
model years
14
vehicle entries
Official summary
This bulletin is being revised to inform dealers that the vcm / pcm (powertrain control module) may be susceptible to corrosion and / or water intrusion. *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.