{"nhtsa_id":620067,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2001-07-11","date":"2001-06-11","document_id":"1801301","mfr_campaign":null,"replaces":null,"component":"ENGINE AND ENGINE COOLING:ENGINE:GASOLINE","mfr_system":null,"summary":"SOME VEHICLE ENGINES MAY EXHIBIT A ROUGH IDLE AND / OR MALFUNCTION INDICATOR LAMP (MIL) LIGHT ON CONDITION UPON INITIAL START-UP AFTER A COLD SOAK WHEN TEMPERATURES ARE BELOW 50 DEGREES F (10 DEGREES C). THIS BULLETIN INVOLVES SELECTIVELY ERASING AND REPROGRAMMING THE POWERTRAIN CONTROL MODULE (PCM) WITH NEW SOFTWARE. *TT","document":null,"url":"https://open.wenmarpro.com/bulletins/620067","components":[{"id":"engine","name":"Engine","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"JEEP","model":"CHEROKEE","year_from":2000,"year_to":2000,"match":"exact","vehicle_ids":["2000_jeep_cherokee"]},{"make":"JEEP","model":"GRAND CHEROKEE","year_from":2000,"year_to":2000,"match":"exact","vehicle_ids":["2000_jeep_grand-cherokee"]},{"make":"JEEP","model":"WRANGLER","year_from":2000,"year_to":2000,"match":"exact","vehicle_ids":["2000_jeep_wrangler"]}],"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":[]}