Buick Lesabre 2003 — technical service bulletin
Bulletin 030730045 · NHTSA communication 10004327 · issued Sep 1, 2003
Technical service bulletin
communication type
Electrical System
component
2003
model years
3
vehicle entries
Official summary
Service engine soon/service vehicle soon lamp illuminated, transmission slips, no upshift or erratic shifts, diagnostic trouble codes (dtcs) p0753, p1860 set. *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.