What is the 2016-2020 Buick Envision Fuel Dilution of Engine Oil from Stuck PCV Valve (2.0T LTG / 2.5L LCV)?

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.

What is the 2016-2018 Buick Envision Front Brake Hose Rupture Causing Sudden Pedal-to-Floor Brake Loss?

Gen1 Envisions have a cluster of NHTSA complaints describing a front flexible brake hose splitting or rupturing, dumping fluid and producing an instant loss of braking with the pedal falling to the floor. The left front hose is the most frequently reported location, with the righ… Repairs typically run $250-$900. Severity: high.

What is the 2016-2020 Buick Envision Sudden Loss of Electric Power Steering Assist with DTC C056E-5A?

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.

What is the 2025-2026 Buick Envision Top-End Engine Ticking from Hydraulic Lash Adjusters (LSY 2.0T)?

2025-2026 Envisions with the 2.0L turbo LSY four-cylinder develop an audible ticking noise from the top of the engine. Caused by manufacturing debris inside the Stationary Hydraulic Lash Adjusters (SHLAs) preventing proper oil pumping, leaving valvetrain clearance unmaintained. G… Repairs typically run $0-$2,500. Severity: high.

What is the 2016-2020 Buick Envision Instrument Cluster and Center Display Blackout While Driving?

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.

What is the 2016-2018 Buick Envision Front Half-Shaft Shudder Causing Shake When Accelerating From a Stop?

Early Envisions develop a pronounced front-end shake or shimmy when pulling away from a stop, typically fading by about 15 mph. Owners report it from nearly new (some at delivery mileage) and dealers frequently misdiagnosed it as tires, alignment or the steering rack - one owner… Repairs typically run $700-$1,600. Severity: medium.

What is the 2018-2022 Buick Envision Rear Lower Control Arm Bushing Fluid Leak and Suspension Squeak Over Bumps?

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.

What is the 2016-2020 Buick Envision Charge Air Cooler Moisture Intrusion Causing Misfire and Turbo Underboost (2.0T LTG)?

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.

What is the 2017-2022 Buick Envision Auto Stop/Start Rough Restart and Harsh Transmission Re-Engagement?

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.

Buick · Known Issues

Buick Envision Problems & Known Issues

2016-2023, 2025-2026 model years · NHTSA recalls, manufacturer TSBs, and owner forum reports · Updated August 2026

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According to Au7o's research across NHTSA recalls, manufacturer TSBs, and owner forum reports, the 2016-2023, 2025-2026 Buick Envision has 12 documented known issues, with 7 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), Front Brake Hose Rupture Causing Sudden Pedal-to-Floor Brake Loss ($250-$900 repair), Sudden Loss of Electric Power Steering Assist with DTC C056E-5A ($200-$1,500 repair), Fuel Pump Control Module Failure Causing Stalling and Intermittent No-Start (Gen2 LSY) ($500-$1,400 repair), 9T50/9T65 Nine-Speed Automatic Valve Body Fault - Harsh Clunk, Slipping and 'Service Transmission' ($900-$4,500 repair) and Top-End Engine Ticking from Hydraulic Lash Adjusters (LSY 2.0T). at .

Frequently Asked Questions

What are the most common Buick Envision problems?

According to Au7o's research across NHTSA recalls, manufacturer TSBs, and owner forum reports, the 2016-2023, 2025-2026 Buick Envision has 12 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, Front Brake Hose Rupture Causing Sudden Pedal-to-Floor Brake Loss. Of these, 7 are rated critical and should be addressed promptly.

Is the Buick Envision reliable?

The 2016-2023, 2025-2026 Buick Envision has 12 known issues compiled from NHTSA recalls, manufacturer TSBs, and owner forum reports. 7 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 Front Brake Hose Rupture Causing Sudden Pedal-to-Floor Brake Loss and Sudden Loss of Electric Power Steering Assist with DTC C056E-5A and Fuel Pump Control Module Failure Causing Stalling and Intermittent No-Start (Gen2 LSY) and 9T50/9T65 Nine-Speed Automatic Valve Body Fault - Harsh Clunk, Slipping and 'Service Transmission' and Top-End Engine Ticking from Hydraulic Lash Adjusters (LSY 2.0T). 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.

How much does it cost to fix common Buick Envision 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.

What year Buick Envision is the most reliable?

Reliability varies across model years of the Buick Envision. Based on documented issues, problems are most commonly reported in earlier model years. Au7o recommends checking the specific known issues for your target year before purchasing, and having a pre-purchase inspection performed by a qualified mechanic. Our known issues database covers the 2016-2023, 2025-2026 Buick Envision with 12 documented issues compiled from NHTSA recalls, manufacturer TSBs, and owner forum reports.

All 12 Known Issues

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Frequently Asked Questions

What are the most common Buick Envision problems?

Is the Buick Envision reliable?

How much does it cost to fix common Buick Envision problems?

What year Buick Envision is the most reliable?

Fuel Dilution of Engine Oil from Stuck PCV Valve (2.0T LTG / 2.5L LCV)#

Top-End Engine Ticking from Hydraulic Lash Adjusters (LSY 2.0T)#

Charge Air Cooler Moisture Intrusion Causing Misfire and Turbo Underboost (2.0T LTG)#

Auto Stop/Start Rough Restart and Harsh Transmission Re-Engagement#

Brake Vacuum Pump / Booster Pressure Sensor Failure Triggering 'Service Brake Assist' and Hard Pedal#

Front Brake Hose Rupture Causing Sudden Pedal-to-Floor Brake Loss#

Sudden Loss of Electric Power Steering Assist with DTC C056E-5A#

Fuel Pump Control Module Failure Causing Stalling and Intermittent No-Start (Gen2 LSY)#

9T50/9T65 Nine-Speed Automatic Valve Body Fault - Harsh Clunk, Slipping and 'Service Transmission'#

Instrument Cluster and Center Display Blackout While Driving#

Front Half-Shaft Shudder Causing Shake When Accelerating From a Stop#

Rear Lower Control Arm Bushing Fluid Leak and Suspension Squeak Over Bumps#