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2023 Buick Encore Gx Maintenance Schedule

Manufacturer-recommended service intervals for the GM Oil Life System and open recall alerts for your 2023 Buick Encore Gx.

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RecallsFull scheduleKnown issues7

How Buick schedules service: GM Oil Life System

Buick uses the GM Oil Life System: an algorithm tracks engine revolutions and temperature, then lights the change-oil message — typically every 7,500 miles in mixed driving, capped at 12 months, using dexos-approved oil. Current Encore GX and Envista run 1.2/1.3L turbo three-cylinders where oil quality matters more than volume drivers expect (the sump is small and turbo-heated). Front-drive models pair to a CVT with a published fluid interval — it is not a lifetime part.

Essential maintenance

Critical for safety and preventing major damage

🛢️

Engine Oil & Filter (Oil Life System)

Every 7,500 mi

Change when the Oil Life System calls it — typically around 7,500 miles, never beyond 12 months. dexos1 0W-20 on modern engines. Small-displacement turbos (Encore GX, Envista): don't stretch the indicator.

Estimated cost — typical U.S. ranges

Dealer

~$120–$160

Shop

~$85–$115

DIY

~$25–$55

Full synthetic costs more than conventional. 5-quart 0W-20 + filter is the typical bill.

🔄

Tire Rotation

Every 7,500 mi

Rotate every 7,500 miles with the oil change — GM pairs the two in its schedule.

Estimated cost — typical U.S. ranges

Dealer

~$85

Shop

~$60

DIY

Free

Often free at the shop where you bought the tires — worth asking before paying.

🛑

Brake Inspection

Every 7,500 mi

Inspect pads, rotors, and lines at every service. Older Centurys: check rear drum adjustment and parking-brake cables, which seize with age.

Estimated cost — typical U.S. ranges

Dealer

~$85

Shop

~$60

DIY

Free

Most shops do this free as a courtesy with any service. Don't pay separately if you can avoid it.

⚙️

CVT Fluid (Encore GX / Envista FWD)

Every 45,000 mi

FWD Encore GX and Envista use a CVT: GM schedules fluid replacement around 45,000 miles under severe service — which includes most city commuting. AWD Encore GX uses a 9-speed automatic instead (see transmission fluid).

Estimated cost — typical U.S. ranges

Dealer

~$360–$500

Shop

~$255–$355

DIY

~$80–$180

CVT fluid is manufacturer-specific and pricey — do NOT substitute conventional ATF.

Important maintenance

Keeps your vehicle running smoothly and efficiently

⚙️

Automatic Transmission Fluid

Every 45,000 mi

Conventional automatics (Century's 4T65-E, Regal's Aisin, AWD Encore GX's 9-speed): GM lists 45,000 miles severe / longer normal. Older Buicks respond well to a simple drain-and-fill — avoid pressure flushes on high-mile units.

Estimated cost — typical U.S. ranges

Dealer

~$330–$500

Shop

~$235–$355

DIY

~$60–$180

Some sealed transmissions have no dipstick — fill is precise and best left to a shop. Many drivers can still DIY drain-and-fill.

⚡

Spark Plugs

Every 60,000 mi

Small-turbo three-cylinders (Encore GX, Envista): roughly every 60,000 miles — check the manual. Older 3.1/3.8 V6s: iridium plugs last to 100,000 miles.

Estimated cost — typical U.S. ranges

Dealer

~$285–$390

Shop

~$200–$275

DIY

~$25–$100

Iridium plugs cost more but last 100k+ miles. V6/V8 access varies wildly — some are tough.

💨

Engine Air Filter

Every 45,000 mi

GM schedules replacement around 45,000 miles; inspect at every oil change in dusty regions.

Estimated cost — typical U.S. ranges

Dealer

~$60–$95

Shop

~$45–$70

DIY

~$15–$40

5-minute job on most cars; the airbox lid usually has clips, no tools needed.

🔗

Serpentine Belt

Every 60,000 mi

Inspect from 60,000 miles; replace on cracking or glazing rather than mileage alone.

Estimated cost — typical U.S. ranges

Dealer

~$195–$235

Shop

~$135–$165

DIY

~$20–$50

DIY-friendly if you can reach the tensioner. Inspect for cracks rather than swap on a strict mileage interval.

Recommended maintenance

Extends the life of your vehicle and improves comfort

🌬️

Cabin Air Filter

Every 22,500 mi

Replace roughly every 22,500 miles per GM's schedule — behind the glovebox on modern Buicks.

Estimated cost — typical U.S. ranges

Dealer

~$60–$95

Shop

~$45–$70

DIY

~$15–$40

Usually behind the glovebox. Shops charge labor for a 10-minute job — easy DIY win.

🌡️

Coolant Replacement (Dex-Cool)

Every 150,000 mi

Dex-Cool is rated 5 years / 150,000 miles. On older 3.1/3.8 V6s, intake-gasket seepage was the classic failure — check coolant level and condition at every oil change on a Century.

Estimated cost — typical U.S. ranges

Dealer

~$285–$330

Shop

~$200–$235

DIY

~$25–$60

Use the manufacturer-specified coolant — wrong color/chemistry can damage the cooling system.

🔋

Battery Test & Service

Every 25,000 mi

Test annually after year 3. Stop-start-equipped Encore GX/Envista use AGM batteries — replace like-for-like, not with a cheaper flooded battery.

Estimated cost — typical U.S. ranges

Dealer

~$225–$390

Shop

~$160–$280

DIY

~$130–$250

Most auto-parts stores test and install batteries free with purchase. Skip the dealer markup.

Known issues for this vehicle

What drivers and federal regulators have officially reported about the 2023 Buick Encore Gx.

Reported to NHTSA

Acceleration hesitation and surge with A/C in heat

VEHICLE SPEED CONTROL, ENGINE

3 NHTSA complaints · 2023-07 -> 2023-10

“The contact owns a 2023 Buick Encore GX. The contact stated while depressing the accelerator pedal, the vehicle failed to immediately accelerate. On several occasions while depressing the accelerator pedal, the vehicle abruptly accelerated. The cause of the failure was not yet determined.”
— Owner report, NHTSA ODI #11534862
“Vehicle struggles to stay running in the heat with the air conditioning running. Low voltage codes pulled at dealership. When the air conditioner is running there is an awful toxic smell from the vents both with or without recycling the air. Vehicle struggles to slow then accelerate...”
— Owner report, NHTSA ODI #11552368

Read all complaints on NHTSA →

CVT transmission and shifter assembly failure

POWER TRAIN

2 NHTSA complaints · 2025-11 -> 2026-02

“When starting from a traffic light after the green light, the car made mechanical noises and would not accelerate above approximately 25 mph. It seemed obvious at the time that the transmission had failed, which was later confirmed after being towed to the dealership.”
— Owner report, NHTSA ODI #11717276
“The shifter assembly failed. When shifting to Park, a "Shift to Park" message appears on the driver information center. Although the shift lever is in the Park position, it is not recognized, and the car cannot be turned off or locked.”
— Owner report, NHTSA ODI #11698893

Read all complaints on NHTSA →

Front-end rattle and steering wander

STEERING

2 NHTSA complaints · 2023-07 -> 2026-02

“The contact owns a 2023 Buick Encore GX. The contact stated that while driving on several occasions at various speeds, the vehicle bounced to the left and the right, and the steering wheel pulled to the left or the right, making it difficult to steer the vehicle.”
— Owner report, NHTSA ODI #11717188
“While driving at a low rate of speed, turning or speed bumps the vehicle starts to rattle in the front end and steering wheel. Engine feels like it slips while rattling from the front. Seems like a motor mount, suspension, tie rod or some other component.”
— Owner report, NHTSA ODI #11534122

Read all complaints on NHTSA →

Center display lockup and corruption

ELECTRICAL SYSTEM

2 NHTSA complaints · 2023-03 -> 2023-10

“Center vehicle display intermittent issues. Will not respond, turns on back up camera while driving forward, fails to connect/respond to phone plugged in USB-C. Unable to change vehicle settings when malfunctioning.”
— Owner report, NHTSA ODI #11552370
“What component or system failed or malfunctioned, and is it available for inspection upon request? I reported that my display screen would often appear corrupted when navigating. The screen will either go blank or appear grainy, preventing me from accessing the navigation or music features.”
— Owner report, NHTSA ODI #11510779

Read all complaints on NHTSA →

Engine shutdown with no restart on auto stop

ELECTRICAL SYSTEM, SERVICE BRAKES, ENGINE

1 NHTSA complaint · 2026-03 -> 2026-03

“I am reporting a serious safety issue with my 2023 Buick Encore GX that repeatedly shuts off while driving and...”
— Owner report, NHTSA ODI #11725113

Read all complaints on NHTSA →

Brake grab, noise, and pedal feel

SERVICE BRAKES, FORWARD COLLISION AVOIDANCE

3 NHTSA complaints · 2022-11 -> 2023-10

“Our new 2023 Buick ENCORE GX's brakes continually GRAB whether we are approaching a slowed vehicle in front of us or not. Also, beginning yesterday, the brake pedal that I step on to start the vehicle was totally locked up and I was unable to start the car for awhile.”
— Owner report, NHTSA ODI #11493530
“Brakes squeaking, squealing and screeching. Replaced once at approximately 8k miles. Dealership ground down rotors twice, brakes replaced once. Tires are worn in the center. AWD GX, steering seems off and unstable. Brake pedal sounds and feels like a faulty spring inside.”
— Owner report, NHTSA ODI #11552372

Read all complaints on NHTSA →

Headlight dimming and random outage

ELECTRICAL SYSTEM, EXTERIOR LIGHTING, FORWARD COLLISION AVOIDANCE

1 NHTSA complaint · 2024-04 -> 2024-04

“I bought my car, new, on 10/1/ 2023. The middle of November i noticed the headlights randomly dimming. On 12/3/23 I to the dealership to have them looked at. I was told there was nothing wrong but make an appt. they had my car 3 times in less than 2 months.”
— Owner report, NHTSA ODI #11585477

Read all complaints on NHTSA →

Issues on other model years

  • 2020 Buick Encore Gx →
  • 2021 Buick Encore Gx →
  • 2022 Buick Encore Gx →
  • 2024 Buick Encore Gx →
  • 2025 Buick Encore Gx →
  • 2026 Buick Encore Gx →

Source: NHTSA Office of Defects Investigation (ODI). Complaint data refreshed Jul 20, 2026. Investigation data refreshed Jul 20, 2026.

We display NHTSA's record with attribution; we don't editorialize on what these complaints mean for any specific vehicle.

Typical U.S. ranges. Actual quotes vary by shop, parts choice, and vehicle condition.

How we estimate: Dealer = OEM parts × 1.4 + labor × $165/hr. Shop = parts + labor × $115/hr. DIY = parts only.

This maintenance schedule for the 2023 Buick Encore Gx reflects Buick's published service intervals and the GM Oil Life System system. Your actual service needs may vary based on driving conditions, climate, and vehicle usage. Always consult your owner's manual for model-specific recommendations.

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