{"nhtsa_id":10176817,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2020-06-29","date":"2020-05-19","document_id":"A202301230","mfr_campaign":null,"replaces":null,"component":"POWER TRAIN; ELECTRICAL SYSTEM:SOFTWARE; ENGINE","mfr_system":null,"summary":"SUB - Certain 2021 model year Chevrolet Trailblazer, and 2020-2021 model year Buick Encore GX vehicles, equipped with a continuously variable ratio (CVT) transmission, may experience reduced launch performance during a quick exit from a stop/start event. DTC?s P0746 and P0776 may also set illuminating a Check Engine Light. The main pump in the CVT has a priming delay under certain conditions. Dealers will reprogram the transmission control module (TCM) with updated software.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2020/MC-10176817-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2020/MC-10176817-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10176817","components":[{"id":"electrical","name":"Electrical system","parent":null},{"id":"engine","name":"Engine","parent":null},{"id":"powertrain","name":"Transmission and driveline","parent":null},{"id":"software","name":"Software","parent":"electrical"}],"codes":["P0746","P0776"],"topics":[],"vehicles":[{"make":"BUICK","model":"ENCORE","year_from":2020,"year_to":2020,"match":"exact","vehicle_ids":["2020_buick_encore"]},{"make":"CHEVROLET","model":"TRAILBLAZER","year_from":2021,"year_to":2021,"match":"exact","vehicle_ids":["2021_chevrolet_trailblazer"]}],"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":[]}