2.5L DOHC SIDI VVT Engine Complete Assembly for 2017-2020 Buick Envision - Front
Product Notes Read before buying
This engine fits Front-Wheel Drive (FWD) models only. It is the 2.5L naturally aspirated engine, corresponding to the 8th VIN digit 'A'. Please verify your vehicle's engine code and drivetrain before ordering.
Voice or type your vehicle details and Wrenchy will confirm fitment in seconds.
Vehicle Fitment Guide
This part fits the following vehicles:
| SubmodelSUB- MODEL |
Body Style | Years | Engine | Attributes |
|---|---|---|---|---|
| Base | SUV | 2017 - 2020 | L4 2.5L | FWD | Automatic |
| Essence | SUV | 2017 - 2020 | L4 2.5L | FWD | Automatic |
| Preferred | SUV | 2017 - 2020 | L4 2.5L | FWD | Automatic |
| 2018 - 2019 |
Know This Engine Before You Buy
The research behind our purchase interview — recalls, bulletins and real install economics for this engine family:
A quick look at your own vehicle makes sure the right engine shows up:
- Confirm the 8th digit of your 17-digit VIN is 'A'.
- Verify your vehicle is Front-Wheel Drive (FWD), not All-Wheel Drive (AWD).
- Locate the Service Parts Identification label and confirm it lists the RPO code 'LCV'.
What the install really takes — plan and budget with confidence:
Special tools this job needs:
- Engine hoist/crane
- Load leveler
- Engine stand
- Torque wrenches
- GM-specific quick-disconnect tools for fuel lines
- Bidirectional scan tool
Budget for these consumables at install:
- 5.0 Quarts of SAE 5W-20 (or 0W-20) full synthetic oil meeting GM dexos1 specifications (6.0 quarts if transferring to AWD oil pan setup)
- New ACDelco PF64 oil filter or equivalent
- Dex-Cool (orange) 50/50 pre-diluted coolant
- New ACDelco 41-115 (GM Part Number 12627160) iridium spark plugs
- New intake manifold gaskets, exhaust manifold gaskets, thermostat gasket, and oil cooler seals
- New rear main seal (highly recommended)
- New thermostat
- New torque-to-yield (TTY) flywheel/flexplate bolts and harmonic balancer bolt
What your vehicle’s computers will need after the swap:
What’s involved: Crankshaft Position Variation Learn (CASE Relearn) and Throttle Body Idle Relearn
A GM-compatible bidirectional scan tool (such as GM Techline Connect/SPS) is required to perform the CASE relearn once the engine is running to prevent misfire detection issues and DTCs P0300/P0315.
Pro tips for a smooth first start-up — hand them to whoever does the install:
- Oil Cooler Replacement: If original engine failed due to internal mechanical damage, you must replace the engine oil cooler and lines. Flushing is not sufficient.
- Crankshaft Position (CKP) Relearn: You must perform a CASE relearn using a bidirectional scan tool immediately after first start to avoid false misfire codes.
- High-Pressure Fuel System Safety: Relieve fuel system pressure before disconnecting lines and use new seals on high-pressure connections.
- Torque-to-Yield Fasteners: Do not reuse flywheel/flexplate bolts or the crankshaft balancer bolt; they are single-use.
- Oil Priming: Prime the oiling system before starting the engine for the first time.
- Ground Straps: Ensure all engine and transmission ground straps are securely connected.
Easy to get right once you know them:
- Reusing a contaminated oil cooler after a bearing failure, leading to immediate replacement engine failure.
- Ordering for the wrong vehicle or drivetrain (e.g., trying to install this FWD engine in an AWD Envision, or in a Colorado, Canyon, or Malibu).
- Skipping the CASE relearn and assuming the engine is defective when misfire codes (DTC P0300/P0315) appear.
- Reusing old consumables like spark plugs, thermostat, or gaskets to save money.
- Not checking or replacing the PCV valve during the swap.
Not issues with the units on this page — the manufacturer documented these for every engine of this family, wherever you buy one. Handy for your installer:
🔎 Recommended at install: Replace the high-pressure fuel pump and fuel pipe (NHTSA Campaign 18V281000 / 18V358000).
🔎 Recommended at install: If original engine failed due to a spun bearing, you must replace the engine oil cooler and lines to prevent debris contamination.
🔎 Recommended at install: Address malfunctioning dual-stage oil pump control valve or timing chain guide wear.
🔎 Recommended at install: Diligent monitoring of oil level; inspect or replace faulty PCV valve.
🔎 Recommended at install: Perform intake valve cleaning over time to prevent reduced performance.
🔎 Recommended at install: Replace VVT solenoids; maintain regular oil changes to prevent contamination.
🔎 Recommended at install: Engine replacement may be required (historical issue).
Researched from factory recalls, TSBs and OEM service data (reference unit 300-10054-2306070). Unit-specific details — mileage, condition, warranty, freight — are covered in the checkout interview.
Policies, in plain English.
Shipping & Handling
- Ships by LTL freight on a pallet — a real freight truck, not a parcel van
- Your checkout freight quote covers delivery to your door (liftgate service included for residential addresses)
- The carrier calls ahead to schedule a delivery window — someone must be present to receive it
- Typically palletized and picked up within 2–3 business days; transit time depends on distance
120-Day Warranty
This part includes a 120-day warranty.
- If the part fails within the warranty window, we'll replace it or refund per the coverage terms
- Coverage is parts-only — installation labor is not included
- Warranty covers defects — not installation errors, misuse, or damage after installation
Your pre-purchase interview reviews these exact terms with you before anything is charged.
Returns (30 Days)
We accept returns of uninstalled parts within 30 days of delivery for this part.
- Defective parts: We will replace the part or issue a refund at our discretion
- Programming: "Needs to be programmed to my vehicle" is not a valid return reason. Many modules require dealer programming — we're happy to help connect you with resources if your dealer says it's not programmable
- Return shipping: This part ships by freight (LTL) — the part price is refundable per the terms above, but shipping costs are non-refundable and return freight follows the seller's return terms. Your pre-purchase interview walks through the exact numbers before you buy
- Parts must be returned in original packaging and unmodified condition
- Poorly packaged returns that arrive damaged will not be credited
Damaged in Shipping?
Freight damage is rare — and you're fully protected when you do two things at delivery:
- Inspect before you sign — you're allowed time to look the pallet over while the driver waits
- Write any damage on the delivery receipt before signing — that one line is what makes a freight claim succeed
- Severe damage? Refuse the delivery — it goes back at no cost to you and we make it right
- Photograph the pallet before unwrapping; report concealed damage within 24 hours of delivery
We handle the carrier claim — you just help document it. Your pre-purchase interview walks through this checklist too.
Order Cancellation
Cancel before shipment for a full refund. Once the pallet has been built, a preparation charge may apply — and once the freight carrier picks it up, shipping costs are non-refundable and standard return terms apply. Your pre-purchase interview shows the exact numbers before you pay.
Expert Guides
2017-2020 Buick Envision 2.5L LCV Engine: Problems, Identification, and Used Replacement
Identify the 2.5L LCV, understand what causes catastrophic failures like spun bearings, and learn when to swap in a used OEM replacement unit.
Read Full Guide →Related Trouble Codes (OBD-II)
6 matching guidesIf your scan tool is showing one of these trouble codes, this part is a common fix. Each guide explains the code, how to diagnose it, and exactly what to replace.
Miscellaneous Information
OEM Part Numbers:
Buick: 12675962
GM: 25204563
Fits Years: 2017 2018 2019 2020
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This unit ships with the selling yard's 120-day warranty. Longer plans can be requested during checkout.
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