Chevrolet Avalanche 2008 — technical service bulletin
Bulletin RB-12009 · NHTSA communication 10043859 · issued Feb 1, 2012
Technical service bulletin
communication type
Engine and Engine Cooling
component
2008
model years
6
vehicle entries
Official summary
Gm: see document search button for owner letter. Incorrect engine control module calibration. General motors has decided to conduct a voluntary emission recall involving certain 2008 model year vehicles equipped with a 4.8l/0.6l engine (ly2/l76). *js
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.