2021 Buick Envision
Vehicle Specs & Maintenance Data
The 2021 Buick Envision maintenance specs on this page cover the key fluids, torque values, and wear items you need for routine service. Use these numbers as a quick reference when performing oil changes, tire rotations, brake jobs, and other scheduled maintenance on your Buick Envision.
For oil changes, the 2021 Buick Envision takes 5W-30 Full Synthetic motor oil with a capacity of 5 quarts. Brake fluid type is DOT 3, the recommended coolant is Dex-Cool (OAT), and transmission fluid is Dexron VI. Always use the manufacturer-recommended fluids to maintain warranty coverage and engine longevity.
When mounting wheels on the Buick Envision, torque the lug nuts to 140 ft-lbs using a calibrated torque wrench. Over- or under-torquing can lead to warped brake rotors or loose wheels. Re-torque after 50 to 100 miles on newly installed wheels.
Owners of the 2021 Buick Envision have reported 5 common issues including "Daytime Running Lights Fail to Deactivate", "9-Speed Automatic Transmission Shifting Issues" and "Windows Rolling Down on Their Own". Scroll down to the Diagnostics tab for detailed descriptions, solutions, and estimated repair costs.
There are 2 NHTSA safety recalls on file for the 2021 Buick Envision. Check the Recalls tab below for full details.
Specifications on this page are compiled from multiple publicly available sources including manufacturer documentation, NHTSA data, and automotive databases. Always cross-reference with your owner's manual or official factory documentation before purchasing parts or performing any service.
The 2021 Buick Envision uses 5W-30 Full Synthetic motor oil (5 qt capacity), requires lug nuts torqued to 140 ft-lbs, takes DOT 3 brake fluid.
Manufacturer-recommended maintenance schedule for the 2021 Buick Envision. Always verify intervals against your owner's manual.
Enter a diagnostic trouble code to see causes, symptoms, and fixes for the 2021 Buick Envision.
Common problems reported by 2021 Buick Envision owners, with recommended fixes and estimated repair costs.
Daytime Running Lights Fail to Deactivate
The DRLs may not turn off when the headlights are switched on, affecting 2021-2023 Buick Envision models. Having both DRLs and headlights active creates excessive forward glare that reduces visibility for oncoming traffic, violating federal safety standards and increasing crash risk on dark roads.
NHTSA recall for BCM software update. Dealers update the body control module software, or the fix may be applied via OTA update. The repair is free of charge.
Est. Cost: $0 (recall repair)9-Speed Automatic Transmission Shifting Issues
The 9-speed automatic transmission paired with the 2.0L turbo engine exhibits rough shifting, gear hunting during highway driving, and delayed downshifts when passing. Some owners report the transmission failing to engage gears correctly, with RPMs climbing excessively before a harsh shift occurs.
Transmission fluid service and TCM software update. Adaptive learning reset. For persistent issues, internal transmission inspection and potential replacement of the valve body or torque converter.
Est. Cost: $250 (fluid service) - $4,000 (major transmission repair)Windows Rolling Down on Their Own
Multiple owners report finding their windows rolled down without input, including while the vehicle is parked and locked. This is a body control module software glitch that inadvertently activates the power window motors. The issue poses a security risk and can lead to water damage to the interior during rain.
BCM software update at the dealer to correct the power window control logic. In some cases, the driver's door master window switch module may need replacement if it is sending phantom signals to the BCM.
Est. Cost: $0 (software update) - $400 (switch replacement)Safety Restraint System Warning Light
The safety restraint system (SRS) warning light may illuminate on the dashboard without an apparent cause. Inspection has revealed defective SRS panels and wiring issues in some vehicles. A lit SRS warning indicates the airbag system may not function properly in a crash, which is a critical safety concern.
Dealer diagnostic scan of the SRS system to identify the specific fault code. Common repairs include replacing the clock spring in the steering column, repairing wiring harness connectors, or replacing a faulty seat-mounted side airbag module.
Est. Cost: $300 - $1,200Auto Stop/Start System Erratic Behavior
The automatic engine stop/start feature can behave erratically, with the engine failing to restart promptly, restarting with a harsh vibration, or the system refusing to engage when conditions are appropriate. In some cases, the engine will auto-stop at inopportune moments, such as when creeping forward in traffic.
Ensure the 12V battery meets AGM specifications and is fully charged. ECM and BCM software updates to improve stop/start calibration and operating parameters. In some cases, the enhanced starter motor may need replacement due to premature wear from frequent cycling.
Est. Cost: $200 (battery) - $800 (starter replacement)2 NHTSA safety recalls for the 2021 Buick Envision. Check your VIN at NHTSA.gov
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."
DRLs that do not deactivate as intended may result in a glare, reducing visibility, and increasing the risk of a crash.
The body control module software will be updated by a dealer, or through an over-the-air (OTA) update, free of charge. Owner notification letters were mailed January 23, 2023. Owners may contact GMC customer service at 1-888-988-7267, Chevrolet customer service at 1-800-222-1020, or Cadillac customer service at 1-800-458-8006. GM's number for this recall is N222386380. This recall expands previous recall number 22V-827.
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.
The air bag malfunction indicator light may fail to warn the driver of a problem with the air bag, increasing the risk of injury.
The communications gateway module software will be updated by a dealer, or through an over-the-air (OTA) update, free of charge. Owner notification letters were mailed on July 1, 2021. Owners may contact Buick customer service at 1-800-521-7300, Cadillac customer service at 1-800-458-8006, Chevrolet customer service at 1-800-222-1020, or GMC customer service at 1-800-462-8782. GM's number for this recall is N212338110.