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RecallGazette

Vehicle problems, recalls & safety intelligence

Buick Roadmaster 1996–2000technical service bulletin

Bulletin 010730023B · NHTSA communication 634815 · issued Mar 1, 2002

Technical service bulletin
communication type
Power Train
component
1996–2000
model years
34
vehicle entries

Official summary

Some customers may comment on a harsh 1-2 upshift and the check engine light or service engine soon indicator is illuminated and diagnostic trouble code p1870 set. *tt

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.