Chevrolet Envoy 2002 — technical service bulletin
Bulletin 080801 · NHTSA communication 625369 · issued Aug 8, 2001
Technical service bulletin
communication type
Engine and Engine Cooling
component
2002
model years
4
vehicle entries
Official summary
Information regarding calibrations available to correct delays in transmission downshifting and complaints of fan noise. *jg
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.