Chevrolet Express 2001–2002 — technical service bulletin

Bulletin 040604020 · NHTSA communication 10012583 · issued Apr 1, 2004

Technical service bulletin

communication type

Engine and Engine Cooling

component

2001–2002

model years

vehicle entries

Official summary

Revised diagnostic system check - engine controls. *tt

Vehicles covered

2001 Chevrolet Express
2002 Chevrolet Express
2001 GMC Savana
2002 GMC Savana

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.