{"nhtsa_id":11031515,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2026-04-23","date":"2026-04-16","document_id":"PIT6505","mfr_campaign":null,"replaces":null,"component":"UNKNOWN OR OTHER","mfr_system":null,"summary":"This preliminary information communicates an issue with an SES MIL DTC P2B87 and/or P2B86 cause by the Aux heater coolant pump have an unwanted oring stuck in the pump. Dealers are to remove oring and reinstall pump.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11031515-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11031515-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11031515","components":[],"codes":["P2B86","P2B87"],"topics":[],"vehicles":[{"make":"CADILLAC","model":"ESCALADE","year_from":2024,"year_to":2026,"match":"exact","vehicle_ids":["2024_cadillac_escalade","2025_cadillac_escalade","2026_cadillac_escalade"]},{"make":"CADILLAC","model":"ESCALADE ESV","year_from":2024,"year_to":2026,"match":"exact","vehicle_ids":["2024_cadillac_escalade-esv","2025_cadillac_escalade-esv","2026_cadillac_escalade-esv"]},{"make":"CHEVROLET","model":"SUBURBAN","year_from":2024,"year_to":2024,"match":"exact","vehicle_ids":["2024_chevrolet_suburban"]},{"make":"CHEVROLET","model":"SUBURBAN 1500","year_from":2025,"year_to":2026,"match":"base","vehicle_ids":["2025_chevrolet_suburban","2026_chevrolet_suburban"]},{"make":"CHEVROLET","model":"TAHOE","year_from":2024,"year_to":2026,"match":"exact","vehicle_ids":["2024_chevrolet_tahoe","2025_chevrolet_tahoe","2026_chevrolet_tahoe"]},{"make":"GMC","model":"YUKON","year_from":2024,"year_to":2026,"match":"exact","vehicle_ids":["2024_gmc_yukon","2025_gmc_yukon","2026_gmc_yukon"]},{"make":"GMC","model":"YUKON XL","year_from":2024,"year_to":2026,"match":"exact","vehicle_ids":["2024_gmc_yukon-xl","2025_gmc_yukon-xl","2026_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":[]}