{"nhtsa_id":10004653,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2003-12-30","date":"2003-09-17","document_id":"703R","mfr_campaign":null,"replaces":null,"component":"ENGINE AND ENGINE COOLING","mfr_system":null,"summary":"UNDER NORMAL OPERATING CONDITIONS, THE WATER (COOLANT) TEMPERATURE ON MODEL 320 AND MODEL 387 VEHICLES WILL BE BETWEEN 210 DEGREES F AND 225 DEGREES F (99 DEGREES C AND 107 DEGREES C). CURRENT WATER TEMPERATURE GAUGES IN THESE VEHICLES SHOW THIS RANGE AS BEING WITHIN A RED OR DANGER ZONE, WHICH IS INCORRECT AND COULD CAUSE UNNECESSARY CONCERN TO AN OPERATOR. A NEW WATER TEMPERATURE GAUGE FACEPLATE HAS BEEN DEVELOPED TO REPLACE THE CURRENT FACEPLATE. *TT","document":null,"url":"https://open.wenmarpro.com/bulletins/10004653","components":[{"id":"engine","name":"Engine","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"PETERBILT","model":"PETERBILT","year_from":null,"year_to":null,"match":null,"vehicle_ids":[]}],"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":[]}