{"nhtsa_id":11011347,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2024-12-04","date":"2024-11-22","document_id":"PIT5868C","mfr_campaign":null,"replaces":null,"component":"ELECTRICAL SYSTEM; UNKNOWN OR OTHER","mfr_system":null,"summary":"This Preliminary information communicates an issues will low or poor heater performance on the drivers side. Dealers are to inspect the HVAC temperature door linkage and if ok replace the heater core.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2024/MC-11011347-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2024/MC-11011347-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11011347","components":[{"id":"electrical","name":"Electrical system","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"CADILLAC","model":"ESCALADE","year_from":2021,"year_to":2022,"match":"exact","vehicle_ids":["2021_cadillac_escalade","2022_cadillac_escalade"]},{"make":"CADILLAC","model":"ESCALADE ESV","year_from":2021,"year_to":2022,"match":"exact","vehicle_ids":["2021_cadillac_escalade-esv","2022_cadillac_escalade-esv"]},{"make":"CHEVROLET","model":"SILVERADO 1500","year_from":2019,"year_to":2022,"match":"base","vehicle_ids":["2019_chevrolet_silverado","2020_chevrolet_silverado","2021_chevrolet_silverado","2022_chevrolet_silverado"]},{"make":"CHEVROLET","model":"SILVERADO 2500","year_from":2019,"year_to":2022,"match":"base","vehicle_ids":["2019_chevrolet_silverado","2020_chevrolet_silverado","2021_chevrolet_silverado","2022_chevrolet_silverado"]},{"make":"CHEVROLET","model":"SILVERADO 3500","year_from":2019,"year_to":2022,"match":"base","vehicle_ids":["2019_chevrolet_silverado","2020_chevrolet_silverado","2021_chevrolet_silverado","2022_chevrolet_silverado"]},{"make":"CHEVROLET","model":"SUBURBAN","year_from":2021,"year_to":2022,"match":"exact","vehicle_ids":["2021_chevrolet_suburban","2022_chevrolet_suburban"]},{"make":"CHEVROLET","model":"TAHOE","year_from":2021,"year_to":2022,"match":"exact","vehicle_ids":["2021_chevrolet_tahoe","2022_chevrolet_tahoe"]},{"make":"GMC","model":"SIERRA 1500","year_from":2019,"year_to":2022,"match":"base","vehicle_ids":["2019_gmc_sierra","2020_gmc_sierra","2021_gmc_sierra","2022_gmc_sierra"]},{"make":"GMC","model":"SIERRA 2500","year_from":2019,"year_to":2022,"match":"base","vehicle_ids":["2019_gmc_sierra","2020_gmc_sierra","2021_gmc_sierra","2022_gmc_sierra"]},{"make":"GMC","model":"SIERRA 3500","year_from":2019,"year_to":2022,"match":"base","vehicle_ids":["2019_gmc_sierra","2020_gmc_sierra","2021_gmc_sierra","2022_gmc_sierra"]},{"make":"GMC","model":"YUKON","year_from":2021,"year_to":2022,"match":"exact","vehicle_ids":["2021_gmc_yukon","2022_gmc_yukon"]},{"make":"GMC","model":"YUKON XL","year_from":2021,"year_to":2022,"match":"exact","vehicle_ids":["2021_gmc_yukon-xl","2022_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":[]}