{"nhtsa_id":10025682,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2008-08-29","date":"2014-09-01","document_id":"SB-07-08-42-006H","mfr_campaign":null,"replaces":"SB-07-08-42-006J","component":"EXTERIOR LIGHTING:TURN SIGNAL","mfr_system":null,"summary":"INFORMATION ON BCM CALIBRATIONS AVAILABLE TO RESTORE BULB OUTAGE DETECTION ON VEHICLES PRODUCED BY A SECOND STAGE MANUFACTURER, TURN SIGNALS FLASH FAST AFTER FACTORY BOX REMOVED (UPFITTER). CHASSIS CAB MODELS AND PICKUPS WITH BOX DELETE OPTION ONLY (RPO ZW9). *PE UPDATED 4/3/2012. *PE MODELS 2007-13 SILVERADO; SIERRA. UPDATED 11/28/12. *PE UPDATED 1/24/13. *PE UPDATED 09/03/14*LJ UPDATED 12/5/14. PE","document":null,"url":"https://open.wenmarpro.com/bulletins/10025682","components":[{"id":"lighting","name":"Lighting","parent":null},{"id":"turn-signal","name":"Turn signals","parent":"lighting"}],"codes":[],"topics":[],"vehicles":[{"make":"CHEVROLET","model":"SILVERADO","year_from":2007,"year_to":2008,"match":"exact","vehicle_ids":["2007_chevrolet_silverado","2008_chevrolet_silverado"]},{"make":"GMC","model":"SIERRA","year_from":2007,"year_to":2008,"match":"exact","vehicle_ids":["2007_gmc_sierra","2008_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":[]}