Chevrolet Silverado 2007–2008 — technical service bulletin
Bulletin 4529 · NHTSA communication 10023721 · issued Dec 1, 2007
Technical service bulletin
communication type
Engine and Engine Cooling
component
2007–2008
model years
8
vehicle entries
Official summary
High idle, elevated idle, and pto all different options. *nj
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.