Chevrolet Avalanche 2003 — technical service bulletin
Bulletin 01368A · NHTSA communication 10004165 · issued Nov 18, 2003
Technical service bulletin
communication type
Engine and Engine Cooling
component
2003
model years
8
vehicle entries
Official summary
Coolant loss (into the crankcase). *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.