Chevrolet Avalanche 2003 — technical service bulletin
Bulletin 071703 · NHTSA communication 10003798 · issued Jul 17, 2003
Technical service bulletin
communication type
Interior Lighting
component
2003
model years
6
vehicle entries
Official summary
Service four-wheel drive light and the four-wheel drive is inoperative. *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.