Chevrolet Avalanche 2004 — technical service bulletin
Bulletin 040604065 · NHTSA communication 10011049 · issued Oct 1, 2004
Technical service bulletin
communication type
Fuel System, Other
component
2004
model years
10
vehicle entries
Official summary
Engineering investigation (ei #04073) high, low or erratic oil pressure gauge reading setting diagnostic trouble codes p0522 and/or p0523. 2004 isuzu w4 also included. *tt update. *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.