{"nhtsa_id":10218570,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2022-08-22","date":"2021-08-12","document_id":"11-003-21","mfr_campaign":null,"replaces":null,"component":"POWER TRAIN:DRIVELINE:DRIVESHAFT; STRUCTURE; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:MANIFOLD/HEADER/MUFFLER/TAIL PIPE","mfr_system":null,"summary":"Flutter or Rattle Noise From Under the Vehicle - Exhaust Body Heat Shields This bulletin involves replacing all four exhaust heat shields specified in this bulletin. The customer may describe a rattle from underneath the vehicle.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10218570-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10218570-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10218570","components":[{"id":"structure-body","name":"Body and frame","parent":null},{"id":"engine","name":"Engine","parent":null},{"id":"exhaust-emissions","name":"Exhaust and emissions","parent":null},{"id":"powertrain","name":"Transmission and driveline","parent":null},{"id":"driveshaft","name":"Driveshaft","parent":"powertrain"},{"id":"exhaust-pipe","name":"Exhaust manifold, pipes and muffler","parent":"exhaust-emissions"}],"codes":[],"topics":[],"vehicles":[{"make":"JEEP","model":"GRAND CHEROKEE","year_from":2021,"year_to":2021,"match":"exact","vehicle_ids":["2021_jeep_grand-cherokee"]}],"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":[]}