Volvo S70 1998–2000 — technical service bulletin
Bulletin 430029 · NHTSA communication 621829 · issued May 1, 2001
Technical service bulletin
communication type
Power Train
component
1998–2000
model years
9
vehicle entries
Official summary
Customer complaint regarding transmission lockup engagement / disengagement while driving at cruising speeds (90 - 100 km/h / 55 - 60 mph) may be due to coolant contaminated, degraded or overheated transmission fluid. *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.