{"nhtsa_id":10239170,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2023-07-17","date":"2023-06-20","document_id":"PIT6032A","mfr_campaign":null,"replaces":null,"component":"VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM:HEATER CORE","mfr_system":null,"summary":"This Preliminary information communicates an issue with the front HVAC blower speed reducing to a lower speeding when it should be higher. Engineering is working on a fix.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2023/MC-10239170-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2023/MC-10239170-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10239170","components":[{"id":"visibility","name":"Glass, wipers and mirrors","parent":null},{"id":"hvac","name":"Heating and air conditioning","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"CHEVROLET","model":"SILVERADO 1500","year_from":2022,"year_to":2023,"match":"base","vehicle_ids":["2022_chevrolet_silverado","2023_chevrolet_silverado"]},{"make":"CHEVROLET","model":"SUBURBAN","year_from":2022,"year_to":2023,"match":"exact","vehicle_ids":["2022_chevrolet_suburban","2023_chevrolet_suburban"]},{"make":"CHEVROLET","model":"TAHOE","year_from":2022,"year_to":2023,"match":"exact","vehicle_ids":["2022_chevrolet_tahoe","2023_chevrolet_tahoe"]},{"make":"GMC","model":"SIERRA 1500","year_from":2022,"year_to":2023,"match":"base","vehicle_ids":["2022_gmc_sierra","2023_gmc_sierra"]},{"make":"GMC","model":"YUKON XL","year_from":2022,"year_to":2023,"match":"exact","vehicle_ids":["2022_gmc_yukon-xl","2023_gmc_yukon-xl"]}],"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":[]}