Chevrolet Blazer 2003 — technical service bulletin
Bulletin 01641 · NHTSA communication 10007223 · issued Jan 1, 2004
Technical service bulletin
communication type
Electrical System
component
2003
model years
3
vehicle entries
Official summary
P0442 setting after performing pi00622b. 2003 s/t classic vehicles built prior to certain vin ranges also included. *mr
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.