Chevrolet Impala 2000–2004 — technical service bulletin
Bulletin 3820B · NHTSA communication 10019229 · issued Feb 22, 2006
Technical service bulletin
communication type
Engine and Engine Cooling
component
2000–2004
model years
9
vehicle entries
Official summary
Tachometer and temperature gauge inoperative after ipc setup. *ak
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.