2020 model year · NHTSA recalls, manufacturer TSBs, and owner forum reports · Updated September 2026
2020 · All trims · All engines
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According to Au7o's research across NHTSA recalls, manufacturer TSBs, and owner forum reports, the 2020 Buick Envision has 8 documented known issues, with 4 rated critical. The most serious are Fuel Dilution of Engine Oil from Stuck PCV Valve (2.0T LTG / 2.5L LCV) ($180-$650 repair), Brake Vacuum Pump / Booster Pressure Sensor Failure Triggering 'Service Brake Assist' and Hard Pedal ($300-$950 repair), Sudden Loss of Electric Power Steering Assist with DTC C056E-5A ($200-$1,500 repair) and 9T50/9T65 Nine-Speed Automatic Valve Body Fault - Harsh Clunk, Slipping and 'Service Transmission' ($900-$4,500 repair). Across all issues with published estimates, repair costs range from $150 to $4,500. DIY maintenance guides at au7o.io.
EXTERIOR LIGHTING:LIGHTING CONTROL MODULE:SOFTWARE
General Motors, LLC (GM) is recalling certain 2020-2023 Cadillac CT4 and CT5; 2021-2023 Buick Envision; and 2022-2023 Cadillac Escalade and Escalade ESV, Chevrolet Silverado 1500, Suburban, Tahoe, GMC Sierra 1500, Yukon, and Yukon XL vehicles. The daytime running lights (DRLs) may not deactivate when the headlights are on. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 108, "Lamps, Reflective Devices, and Associated Equipment."
AIR BAGS:SRS MALFUNCTION WARNING LAMP/LIGHT
General Motors, LLC (GM) is recalling certain 2021 Buick Envision, Cadillac CT4, CT5, Escalade, Escalade ESV, Chevrolet Tahoe, Corvette, Suburban, GMC Yukon, Yukon XL vehicles. The communications gateway module incorrectly processes a loss of communication with the sensing diagnostic module (SDM), causing the air bag malfunction indicator light to inconsistently illuminate.
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According to Au7o's research across NHTSA recalls, manufacturer TSBs, and owner forum reports, the 2020 Buick Envision has 8 documented issues. The most frequently reported are: Fuel Dilution of Engine Oil from Stuck PCV Valve (2.0T LTG / 2.5L LCV), Brake Vacuum Pump / Booster Pressure Sensor Failure Triggering 'Service Brake Assist' and Hard Pedal, Sudden Loss of Electric Power Steering Assist with DTC C056E-5A. Of these, 4 are rated critical and should be addressed promptly.
The 2020 Buick Envision has 8 known issues compiled from NHTSA recalls, manufacturer TSBs, and owner forum reports. 4 issues are rated critical: Fuel Dilution of Engine Oil from Stuck PCV Valve (2.0T LTG / 2.5L LCV) and Brake Vacuum Pump / Booster Pressure Sensor Failure Triggering 'Service Brake Assist' and Hard Pedal and Sudden Loss of Electric Power Steering Assist with DTC C056E-5A and 9T50/9T65 Nine-Speed Automatic Valve Body Fault - Harsh Clunk, Slipping and 'Service Transmission'. Prospective buyers should inspect for these issues and factor potential repair costs into their purchase decision. Regular maintenance following the manufacturer's schedule helps prevent many common problems.
Repair costs for known Buick Envision issues range from $0 to $4,500, depending on the specific problem and whether you choose DIY or professional repair. The most critical issue, Fuel Dilution of Engine Oil from Stuck PCV Valve (2.0T LTG / 2.5L LCV), typically costs $180-$650 to repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.
On Gen1 Envisions the crankcase ventilation (PCV) valve integrated into the cam cover sticks or fails, letting unburned fuel wash past the rings and accumulate in the crankcase. Owners find the oil level rising above the full mark, a strong gasoline smell in the oil, and a rich-r… Repairs typically run $180-$650. Severity: high.
Content on this page was compiled with AI assistance using NHTSA complaints, TSBs, owner reports, and public automotive data. While we strive for accuracy, this information may contain errors. Always verify repair procedures and specifications with your vehicle's service manual or a qualified mechanic.
Owners report a 'Service Brake Assist' message appearing while driving, immediately followed by a brake pedal that is either rock-hard and requires extreme force, or that goes unresponsive and then sinks to the floor when pumped. Two NHTSA complaints on the 2019 describe this at… Repairs typically run $300-$950. Severity: high.
Envision owners report the steering going completely heavy or the wheel effectively locking, sometimes at highway speed during a merge and sometimes on the restart phase of the auto stop/start cycle. One NHTSA complaint describes total loss of assist lasting about five minutes th… Repairs typically run $200-$1,500. Severity: high.
The nine-speed automatic in later Envisions produces a violent intermittent clunk when engaging or shifting in Drive - described by one owner as 'so violent, it shakes the entire car' - with a tendency to slip on the 1-2 and 2-3 shifts, appearing around 14,000-15,000 miles. On Ge… Repairs typically run $900-$4,500. Severity: high.
The 2.0L LTG turbo's air-to-air charge air cooler collects condensate in its lower core. Under humid conditions or after short trips the accumulated water is slugged into the intake on a hard throttle application, causing a sudden multi-cylinder misfire, a stumble, and in some ca… Repairs typically run $450-$1,100. Severity: medium.
A recurring Gen1 electrical failure: the instrument cluster, radio and shifter illumination go completely dark for 5-20 seconds while the vehicle is moving, then come back on their own. NHTSA reports for the 2017 describe the display going 'very dim and sometimes completely out'… Repairs typically run $150-$1,200. Severity: medium.
The Envision uses hydraulically damped (fluid-filled) rear lower control arm bushings. These bushings split and weep their fluid, showing as a discolored or wet bushing on inspection and producing a squeak or squawk noise over bumps plus a loose, unsettled feel from the rear end. Repairs typically run $300-$900. Severity: medium.
Envisions equipped with GM's auto stop/start shut the engine off at lights and stop signs, then restart with a stumble that owners describe as feeling like a misfire. Moving from the brake to the accelerator during the stop cycle can produce a flare followed by the transmission s… Repairs typically run $0-$450. Severity: medium.
