Mazda B-Series Truck 2001–2002 — technical service bulletin
Bulletin 0101502 · NHTSA communication 635039 · issued Apr 29, 2002
Technical service bulletin
communication type
Power Train
component
2001–2002
model years
4
vehicle entries
Official summary
Some vehicles may exhibit inoperative or inaccurate speedometer, 4x4 lamp illumination, and / or diagnostic trouble codes p1635 and / or p1639, p0602 present after power train control module (pcm) or instrument cluster replacement. *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.