Chevrolet Avalanche 1500 2007 — technical service bulletin
Bulletin 070604013 · NHTSA communication 10021841 · issued May 1, 2007
Technical service bulletin
communication type
Engine and Engine Cooling
component
2007
model years
11
vehicle entries
Official summary
Chuggle, surge or hesitation may be felt with active fuel management system cylinder deactivation transition from v8 mode to v4 mode. *kb
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.