Buick Lesabre 1999 — technical service bulletin
Bulletin 99070 · NHTSA communication 6089158 · issued Oct 1, 1999
Technical service bulletin
communication type
Engine and Engine Cooling
component
1999
model years
2
vehicle entries
Official summary
Voluntary emission campaign for vehicles with an obd-ii calibration that causes a false oxygen sensor code, p1133, to set under certain conditions, resulting in malfunction indicator lamp illumination. *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.