{"nhtsa_id":10030750,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2009-11-25","date":"2009-05-01","document_id":"PIT-4857","mfr_campaign":null,"replaces":null,"component":"AIR BAGS; AIR BAGS:FRONTAL","mfr_system":null,"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","document":null,"url":"https://open.wenmarpro.com/bulletins/10030750","components":[{"id":"air-bags","name":"Air bags","parent":null}],"codes":["U0151"],"topics":[],"vehicles":[{"make":"CHEVROLET","model":"SILVERADO","year_from":2007,"year_to":2009,"match":"exact","vehicle_ids":["2007_chevrolet_silverado","2008_chevrolet_silverado","2009_chevrolet_silverado"]},{"make":"GMC","model":"SIERRA","year_from":2007,"year_to":2009,"match":"exact","vehicle_ids":["2007_gmc_sierra","2008_gmc_sierra","2009_gmc_sierra"]}],"as_of":"2026-10-19","note":"A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.","attribution":[]}