1.2L Turbo Engine Complete Assembly for 2024 Buick & Chevrolet • Envista, Trax
Product Notes Read before buying
This is a 1.2L turbocharged engine (engine code LIH, 8th VIN digit '2'). To ensure proper installation, the turbocharger assembly and other external components must be transferred from your original engine. This engine fits Front-Wheel Drive (FWD) models only.
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 |
|---|---|---|---|---|
| Avenir | SUV | 2024 | L3 1.2L Turbo | FWD | Automatic |
| Avenir | Sport Utility Coupe | 2024 | L3 1.2L Turbo | FWD | Automatic |
| Preferred | Sport Utility Coupe | 2024 | L3 1.2L Turbo | FWD | Automatic |
| Sport Touring | SUV | 2024 | L3 1.2L Turbo | FWD | Automatic |
| Sport Touring | Sport Utility Coupe | 2024 | L3 1.2L Turbo | FWD | Automatic |
| SubmodelSUB- MODEL |
Body Style | Years | Engine | Attributes |
|---|---|---|---|---|
| ACTIV | SUV | 2024 | L3 1.2L Turbo | FWD | Automatic |
| LS | SUV | 2024 | L3 1.2L Turbo | FWD | Automatic |
| LT | SUV | 2024 | L3 1.2L Turbo | FWD | Automatic |
| RS | SUV | 2024 | L3 1.2L Turbo | FWD | Automatic |
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 the VIN is '2'.
- Confirm the Engine Option Code (RPO) is 'LIH'.
- Confirm the vehicle is Front-Wheel Drive (FWD).
What the install really takes — plan and budget with confidence:
Special tools this job needs:
- EN-52458 Variable Camshaft Phaser Holding Tool
- EN-52455 (or Tool 122920) Camshaft Turning Wrench
- EN-52476 Flywheel Locking Tool
- EN-52432 Front Crankshaft Seal Installation Tool
- EN-955-A / EN-955-10-A Timing belt and chain tensioner fixing pins
Budget for these consumables at install:
- GM-approved dexos1 Gen 3 Full Synthetic 0W-20 or 5W-30 oil (4.2 quarts)
- New OEM ACDelco oil filter (PF64 or equivalent)
- GM-approved Dex-Cool coolant
- Three (3) new OE-spec spark plugs
- Intake manifold gasket set
- Exhaust manifold gasket
- Turbocharger mounting gasket and oil feed/return line seals
- Front crankshaft seal
- GM-approved high-temperature RTV sealant
What your vehicle’s computers will need after the swap:
What’s involved: Crankshaft Position (CKP) Sensor Variation Relearn & ECM Software Update
A GM-compatible diagnostic scan tool (such as GDS2 / Techline Connect / MDI 2) is required to perform the CKP relearn, flash the ECM for Recall A242435780, and re-marry the ECM to the vehicle's immobilizer system.
Pro tips for a smooth first start-up — hand them to whoever does the install:
- Inspect the wet timing belt through the oil fill port for cracking, fraying, or swelling before installation.
- Apply a precise 4 mm bead of RTV centered exactly on the oil pan groove; excess RTV will clog the oil pump pickup screen.
- Replace all turbo oil feed and return line seals to prevent oil starvation and immediate turbo failure.
- Inspect the transferred mechanical vacuum pump for smooth operation and debris to prevent camshaft or timing belt breakage.
Easy to get right once you know them:
- Using generic, non-dexos1 Gen 3 certified oil, which chemically degrades the wet timing belt and causes catastrophic engine failure.
- Reusing single-use Torque-to-Yield (TTY) bolts (cylinder head, harmonic balancer, and camshaft phaser bolts).
- Neglecting the Crankshaft Position (CKP) Relearn, resulting in severe misfires and rough idling.
- Failing to thoroughly flush the intercooler/charge air cooler of metal debris and oil from a previous engine failure.
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: ECM must be reprogrammed with updated software by a dealer.
🔎 Recommended at install: Strict adherence to oil change intervals and the use of GM-certified Dexos1 Gen 3 oil is mandatory.
🔎 Recommended at install: Inspect solenoid valve for debris, check harness terminal tension, and perform engine oil pump screening test.
🔎 Recommended at install: Apply a precise 4 mm (0.16 in) bead of RTV centered exactly on the groove of the lower crankcase extension.
🔎 Recommended at install: None required; documented as a normal operating characteristic under 2,000 RPM during cold acceleration.
🔎 Recommended at install: Replace the evaporative emissions purge pump under GM's special extended warranty program.
🔎 Recommended at install: Perform intake valve cleaning to resolve rough idling or misfires.
Researched from factory recalls, TSBs and OEM service data (reference unit 300-10889-5090689). 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
2024 Trax & Envista 1.2L E-Turbo: Problems, Identification, and Used Replacement
Identifying the 1.2L LIH engine, what causes catastrophic failure, and when to swap in a used OEM assembly.
Read Full Guide →Related Trouble Codes (OBD-II)
2 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:
GM: 25206528, 55514764
Fits Years: 2024
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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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