{"nhtsa_id":629815,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2002-04-09","date":"2002-02-20","document_id":"200202","mfr_campaign":null,"replaces":null,"component":"UNKNOWN OR OTHER","mfr_system":null,"summary":"SOME OWNERS OF 2500 HD AND 3500 SERIES TRUCKS WITH THE 6600 DURAMAX DIESEL ENGINE MAY EXPERIENCE THE MALFUNCTION INDICATOR LAMP ILLUMINATED AFTER THE USE OF THE ENGINE COOLANT HEATER AS WELL AS DIAGNOSTIC TROUBLE CODE P0181. *TT","document":null,"url":"https://open.wenmarpro.com/bulletins/629815","components":[],"codes":["P0181"],"topics":[],"vehicles":[{"make":"CHEVROLET","model":"SILVERADO","year_from":2002,"year_to":2002,"match":"exact","vehicle_ids":["2002_chevrolet_silverado"]},{"make":"GMC","model":"SIERRA","year_from":2002,"year_to":2002,"match":"exact","vehicle_ids":["2002_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":[]}