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RecallGazette

Vehicle problems, recalls & safety intelligence

Buick Skylark 1996–2005technical service bulletin

Bulletin 3447 · NHTSA communication 10017086 · issued Oct 24, 2005

Technical service bulletin
communication type
Power Train
component
1996–2005
model years
54
vehicle entries

Official summary

4t40e or 4t45e will not shift no diagnostic trouble codes. *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.