A/C blows warm or the compressor fails

What got replaced

Few of these reports name the part that was replaced.

Recalls and investigations

No recall on the this problem covers the 2020 model year as of Sep 9, 2026.

What owners paid

10 of the 43 reports quote a price. Each dot is one quote. The middle half runs $800 to $3,500.

When it happens

The middle half of failures fell between 49,663 and 65,000 miles, from the 11 reports that gave a mileage.

What owners wrote

“A/C quit working, "Caution Power steering assist ....working, temperature gauge reading zero ( far left side of gauge. PF62F Code set. Repair shop says very common. $800 To repair due to removal of plenum and other component including water temp sensor and thermostat while your there. $100+. 63k miles on vehicle.”

Filed Apr 24, 2026 · 63,000 miles

“2020 Blazer, 65,000 miles. Temp stuck on cold, A/C blows warm aor and driving assistance off. The radiator fan runs continuously. Check engine light on.”

Filed Apr 9, 2026 · 65,000 miles

“Engine fan stuck on high, air conditioner does not work, temperature gauge stuck on cold, driving assist warning light on.”

Filed Apr 20, 2025

“Chronic code P0128, causes cooling fans to go on high, AC doesn't work and steering assist reduced. GM calls for the thermostat to be replaced, at the cost of $1400 at my local Chevrolet dealer. Worked fine for two months then code and issues come back. Online forums are full of people with the same problem. Clearly there is an issue with these vehicles with the 3.6l motor.”

Filed Mar 16, 2025

Other problems on this car

• Power steering cuts out or goes heavy 34 reports
• Check engine light or misfire 34 reports
• Infotainment, screen or backup camera fails 27 reports