Chevrolet Sonic Engine Low Power

I Have A 2019 Chevy Sonic That Was Experiencing Code 84 And A Noticeable Loss Of Power, Which Was The Vehical Going Into Limp Mode. I Found...

Has Driven Fine Until Today. Drives Fine On Flat Surface But The Rpm's Go Up And Loses Power When Going Up Incline Or Hills And Engine...

When I Accelerate To Go Up A Hill I Lose Power. Driving On A Flat Surface Is Fine. Stopping At A Red Light Or Stop Sign. Car Feels Like...

My Car Is Having Trouble Accelerating And Puts Out A Lot Of Exhaust Behind. I Can Floor It And The Rpm's Will Go Up, But Hardly...

Sometimes When I Start It In The Morning And Sometimes When I Drove For Over 30 Km. I Replace The Thermostat With Genuine Part. The Code Was...