Chevrolet Sonic: Power train — automatic transmission

Affects Chevrolet Sonic · 2012 — about 22K vehicles.

The hazard

If the transmission turbine shaft fracture occurs during vehicle operation in first or second gear, the vehicle will not upshift to the third through sixth gears, limiting the vehicle's speed. If the fracture occurs during operation in third through sixth gear, the vehicle will coast until it slows enough to downshift to first or second gear, increasing the risk of a crash.

What to do

GM will notify owners, and dealers will replace the transmission turbine shaft, free of charge. The recall began on August 8, 2014. Owners may contact Chevrolet customer service at 1-800-222-1020. GM's number for this recall is 14234.

Critical — crash/injury risk now High — injury risk; see remedy Moderate — fix at next service Low — minor / informational