{"nhtsa_id":11034767,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2026-07-07","date":"2026-06-24","document_id":"PIT5544J","mfr_campaign":null,"replaces":null,"component":"UNKNOWN OR OTHER","mfr_system":null,"summary":"This Preliminary information communicates information on a hydraulic rush type noise from the power steering gear. This noise is a characteristic of the new Active Hydraulic Assist System RPO NV8 and no repairs should be made. The noise is most noticeable in the cab at idle, in park, with all accessories turned off.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11034767-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11034767-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11034767","components":[],"codes":[],"topics":[],"vehicles":[{"make":"CHEVROLET","model":"SILVERADO 2500","year_from":2016,"year_to":2026,"match":"base","vehicle_ids":["2016_chevrolet_silverado","2017_chevrolet_silverado","2018_chevrolet_silverado","2019_chevrolet_silverado","2020_chevrolet_silverado","2021_chevrolet_silverado","2022_chevrolet_silverado","2023_chevrolet_silverado","2024_chevrolet_silverado","2025_chevrolet_silverado","2026_chevrolet_silverado"]},{"make":"CHEVROLET","model":"SILVERADO 3500","year_from":2016,"year_to":2026,"match":"base","vehicle_ids":["2016_chevrolet_silverado","2017_chevrolet_silverado","2018_chevrolet_silverado","2019_chevrolet_silverado","2020_chevrolet_silverado","2021_chevrolet_silverado","2022_chevrolet_silverado","2023_chevrolet_silverado","2024_chevrolet_silverado","2025_chevrolet_silverado","2026_chevrolet_silverado"]},{"make":"GMC","model":"SIERRA 2500","year_from":2016,"year_to":2026,"match":"base","vehicle_ids":["2016_gmc_sierra","2017_gmc_sierra","2018_gmc_sierra","2019_gmc_sierra","2020_gmc_sierra","2021_gmc_sierra","2022_gmc_sierra","2023_gmc_sierra","2024_gmc_sierra","2025_gmc_sierra","2026_gmc_sierra"]},{"make":"GMC","model":"SIERRA 3500","year_from":2016,"year_to":2026,"match":"base","vehicle_ids":["2016_gmc_sierra","2017_gmc_sierra","2018_gmc_sierra","2019_gmc_sierra","2020_gmc_sierra","2021_gmc_sierra","2022_gmc_sierra","2023_gmc_sierra","2024_gmc_sierra","2025_gmc_sierra","2026_gmc_sierra"]}],"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":[]}