VehicleVerdict

2020 Chevrolet Blazer transmission problems

The 2020 Chevrolet Blazer has 70 transmission complaints filed with NHTSA — 20% of the year's total, and roughly flat versus the prior model year.

70

Transmission complaints

20%

Share of year

0

Crash-involved

1

Related recalls

Transmission complaints by year

Related recalls

20V668000TransmissionOctober 29, 2020 · 194,105 units

Defect

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.

Consequence

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.

Remedy

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.

What owners report

Engine temp gauge stops working causing the air to stop working and the cooling fan to rev to highest rpm. Also a warning that the steering assist is reduced. Eng check light comes on with a code P0208. This a known problem with an extended service # (N242484760) but only if your vin is listed. All…

Complaint filed with NHTSA · Transmission · May 27, 2026

Common questions

How many transmission complaints does the 2020 Chevrolet Blazer have?

NHTSA has 70 complaints about the 2020 Chevrolet Blazer transmission — 20% of all complaints filed for that model year.

Are there recalls for the 2020 Chevrolet Blazer transmission?

Yes — 1 NHTSA recall campaign for this model year is tied to the transmission: 20V668000.

Related

Based on NHTSA ODI data through June 2026. Complaints are consumer-reported and unverified. Updated July 5, 2026.

Compiled by Sharon Ben-Moshe, Founder.