Chevrolet Avalanche 2003 — technical service bulletin
Bulletin 00559C · NHTSA communication 10005485 · issued Jan 1, 2004
Technical service bulletin
communication type
Power Train
component
2003
model years
7
vehicle entries
Official summary
4l80e, 4l85e automatic transmission diagnostic trouble code (dtc) p0706 and vehicle may not start. *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.