{"nhtsa_id":10165899,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2019-10-15","date":"2019-09-23","document_id":"PIP5678","mfr_campaign":null,"replaces":null,"component":"POWER TRAIN","mfr_system":null,"summary":"This Preliminary information communicates to the dealer technician that if they are unable to perform the solenoid characterization using the transmission unit number (TUN) off a replacement 8L90 RPO M5U automatic transmission to refer to the TUNs listed in this PI. If the TUN off the replacement transmission is listed they should refer to bulletin 18-NA-355 and perform a transmission fluid exchange due to possible fluid contamination. The dealer technician is to call technical assistance after the fluid exchange to get the TUN unlocked so they will then be able to complete solenoid valve characterization procedure.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2019/MC-10165899-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2019/MC-10165899-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10165899","components":[{"id":"powertrain","name":"Transmission and driveline","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"CADILLAC","model":"ESCALADE ESV","year_from":2015,"year_to":2016,"match":"base","vehicle_ids":["2015_cadillac_escalade","2016_cadillac_escalade"]},{"make":"CADILLAC","model":"ESCALADE ESV","year_from":2017,"year_to":2017,"match":"exact","vehicle_ids":["2017_cadillac_escalade-esv"]},{"make":"CHEVROLET","model":"SILVERADO","year_from":2017,"year_to":2017,"match":"exact","vehicle_ids":["2017_chevrolet_silverado"]},{"make":"CHEVROLET","model":"SILVERADO 2500","year_from":2015,"year_to":2016,"match":"base","vehicle_ids":["2015_chevrolet_silverado","2016_chevrolet_silverado"]},{"make":"GMC","model":"SIERRA","year_from":2017,"year_to":2017,"match":"exact","vehicle_ids":["2017_gmc_sierra"]},{"make":"GMC","model":"SIERRA 1500","year_from":2015,"year_to":2016,"match":"base","vehicle_ids":["2015_gmc_sierra","2016_gmc_sierra"]},{"make":"GMC","model":"YUKON DENALI","year_from":2015,"year_to":2017,"match":"base","vehicle_ids":["2015_gmc_yukon","2016_gmc_yukon","2017_gmc_yukon"]}],"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":[]}