6-Speed Automatic Transmission Assembly for 2017-2020 Buick Envision - Front
Product Notes Read before buying
This transmission fits Buick Envision models equipped with the 2.5L engine and Front-Wheel Drive (FWD) only. It will not fit models with the 2.0L turbo engine or All-Wheel Drive (AWD). This part may require programming by a qualified technician to ensure proper operation in the vehicle.
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 FLEX | FWD | Automatic |
| Base | SUV | 2017 - 2020 | L4 2.5L | FWD | Automatic |
| Essence | SUV | 2017 - 2020 | L4 2.5L FLEX | FWD | Automatic |
| Essence | SUV | 2017 - 2020 | L4 2.5L | FWD | Automatic |
| Preferred | SUV | 2017 - 2020 | L4 2.5L | FWD | Automatic |
| Preferred | SUV | 2017 - 2020 | L4 2.5L FLEX | FWD | Automatic |
| 2018 - 2019 |
Know This Transmission Before You Buy
The research behind our purchase interview — recalls, bulletins and real install economics for this transmission family:
A quick look at your own vehicle makes sure the right transmission shows up:
- Verify the 8th digit of the VIN is 'A' (2.5L LCV engine).
- Verify the vehicle is FWD (no rear differential or rear drive axles).
- Verify the RPO code on the Service Parts Identification label is MHG or MHK.
What the install really takes — plan and budget with confidence:
Special tools this job needs:
- Engine support bar or subframe/cradle support fixture
- Transmission jack
- Bidirectional scan tool (GM SPS2 / MDI with GDS2 software)
- Torque converter alignment/holding tool (GM J-46409)
Budget for these consumables at install:
- GM Dexron VI licensed ATF (7.0 to 9.0 quarts for full fill)
- Transmission filter and side pan gasket (GM part #24234281)
- Torque converter seal (front pump seal)
- Axle seals
- Transmission cooler line flush solvent/machine
What your vehicle’s computers will need after the swap:
What’s involved: VIN-specific programming (TCM flashing) and Service Fast Learn (adaptive relearn)
The internal TEHCM/TCM must be programmed with software specific to the recipient vehicle's VIN using GM's SPS2 software via a J2534 pass-thru device or dealer-level scan tool. A Service Fast Learn procedure must also be executed with fluid temperatures between 158°F and 239°F.
Pro tips for a smooth first start-up — hand them to whoever does the install:
- Torque converter must be fully seated into the front pump before bolting to the engine to prevent cracking the pump rotor.
- Mandatory professional flush of transmission cooler lines to prevent debris from contaminating the replacement unit's TEHCM.
- Inspect and replace the driver's side axle bushing and seal on the bench if play is detected.
- Follow the exact temperature-based fluid level check procedure using the side case plug, as there is no dipstick.
Easy to get right once you know them:
- Ordering a FWD transmission for an AWD vehicle.
- Reusing a contaminated TEHCM from a catastrophically failed original transmission.
- Skipping the Service Fast Learn / adaptive relearn procedure.
- Incorrect fluid level due to checking without following the temperature-based plug procedure.
- Forcing the engine and transmission together with bellhousing bolts when the torque converter is not fully seated.
Not issues with the units on this page — the manufacturer documented these for every transmission of this family, wherever you buy one. Handy for your installer:
🔎 Recommended at install: Address malfunctioning pressure control solenoid within the TEHCM.
🔎 Recommended at install: Replace damaged transmission fluid pump causing low line pressure.
🔎 Recommended at install: Clear debris blocking fluid passages in the channel plate and spacer plate.
🔎 Recommended at install: Replace worn case bushing and seal using Superior K099/K0100 kit.
🔎 Recommended at install: Perform scan tool relearn or let vehicle rest undisturbed for 3+ hours.
🔎 Recommended at install: Rebuild or replace transmission; replace fractured wave plate before metal fragments circulate.
🔎 Recommended at install: Replace failing torque converter clutch or contaminated fluid.
Researched from factory recalls, TSBs and OEM service data (reference unit 400-10175-2306074). 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 FWD Transmission: Problems, Identification, and Used Replacement
Identify the exact 6T50 transmission for your 2.5L FWD Envision, understand what causes it to fail, and learn when replacing it with a used OEM unit is the smartest choice.
Read Full Guide →Related Trouble Codes (OBD-II)
1 matching guideIf 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:
GM: 24282523, 24290330
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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