Chevrolet Silverado 2007–2009 — technical service bulletin
Bulletin PIT-4857 · NHTSA communication 10030750 · issued May 1, 2009
Technical service bulletin
communication type
Air Bags
component
2007–2009
model years
6
vehicle entries
Official summary
Gmc/chevrolet: sir mil on and tech 2 will not communicate with sdm. Some modules may set a communication dtc u0151 against sdm. Diagnostics may lead to replacement of sdm and replacing sdm may fix the concern for a short time or it may fail again on the first or second ignition key cycle. The hd silverado and sierras only. *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.