Information on Transmission Flares, Slipping, Gear Hunting, Harsh Shifting, Only Shifts at Wide Open Throttle (WOT) or Hard Acceleration, Rolling in Reverse or in Wrong Direction Selected, High Engine RPM, Shift Busyness, Surging While Cruising, Will Not Upshift, Holds in a Lower Gear, Will Not Back Up Hills, Not Shifting, Jerks and/ or Loss of Power – 2019-2021 Buick Chevrolet

2021 Chevrolet Trailblazer

NHTSA ID Number: 10187768 Manufacturer Communication Number: 21NA004   Summary This service bulletin provides information explaining possible normal CVT automatic transmission performance.   6 Affected Products Vehicles MAKE MODEL YEAR BUICK ENCORE GX 2020-2021 CHEVROLET MALIBU 2019-2021 CHEVROLET TRAILBLAZER 2021     SEOCONTENT-START   Service Bulletin Bulletin No.: 21-NA-004 Date: January, 2021 INFORMATION Subject: Information on Transmission …

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