Chevrolet Silverado 2007–2009 — technical service bulletin
Bulletin PIP-4664 · NHTSA communication 10032889 · issued Jun 1, 2009
Technical service bulletin
communication type
Engine and Engine Cooling
component
2007–2009
model years
6
vehicle entries
Official summary
Gmc/chevrolet: dtc p0101 with non gm air filter. May encounter concern of reduced power and ses light on. Diagnostics may reveal maf (mass air flow) sensor dtc p0101. If diagnostics were inconclusive its possible dtc p0101 is setting due to a non gm air filter. Non gm air filters have shown a slightly higher than normal maf reading. *pe
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.