Chevrolet Silverado 2500 2007–2009 — technical service bulletin
Bulletin SB-08-06-03-006A · NHTSA communication 10028753 · issued Feb 1, 2009
Technical service bulletin
communication type
Power Train
component
2007–2009
model years
12
vehicle entries
Official summary
General motors: engine running with key off, continuous run; sensing diagnostic module (sdm), no communication, service air bag light illuminated (install diode to solenoid/relay). *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.