Buick Recall 20V-668: Power train – automatic transmission

Affected: 2019–2020 Buick Enclave, 2019–2020 Buick Encore, 2018–2019 Buick Lacrosse and 9 more. Filed with NHTSA on October 29, 2020, covering about 194,105 vehicles.

The problem

General Motors LLC (GM) is recalling certain 2018-2019 Chevrolet Cruze and Buick LaCrosse, 2018-2020 Chevrolet Equinox, Chevrolet Traverse and GMC Terrain, 2018 Chevrolet Malibu, 2019-2020 Buick Encore, Buick Enclave, Cadillac XT4, Chevrolet Blazer and GMC Acadia, and 2020 Cadillac XT6 vehicles. The start/stop accumulator endcap may have missing bolts.

The risk

Missing bolts on the start-stop accumulator endcap could result in a transmission oil leak and may progress to a loss of propulsion, increasing the risk of a crash. A transmission fluid leak in the presence of an ignition source may increase the risk of fire.

The fix

GM will notify owners, and dealers will inspect the start-stop transmission accumulator and replace it if any bolts are missing, free of charge. The recall began December 15, 2020. Owners may contact GMC customer service at 1-888-988-7267, Buick Customer service at 1-866-608-8080, Chevrolet customer service at 1-800-222-1020 or Cadillac customer service at 1-800-458-8006. GM's number for this recall is N202313440.

Recall details

NHTSA campaign20V-668 (20V668000)
Manufacturer numberN202313440
ManufacturerGeneral Motors, LLC
ComponentPower train › Automatic transmission
Report dateOctober 29, 2020
Owners notifiedDecember 15, 2020
Vehicles affected194,105
Initiated byManufacturer

Vehicles covered

Owner complaints about the transmission & drivetrain

Frequently asked questions

Is the recall 20V-668 repair free?

Yes. Buick dealers will fix the problem at no cost: GM will notify owners, and dealers will inspect the start-stop transmission accumulator and replace it if any bolts are missing, free of charge. The recall began December 15, 2020.

How do I know if my car is included?

Not every vehicle of the listed model years is affected — the recall covers 194,105 vehicles built in a certain window. Check your 17-character VIN with our VIN recall check or at nhtsa.gov/recalls.

Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.