The GM LKJ is a 1,490 cc, inline‑three turbocharged petrol engine produced from 2017 to present. It features an aluminium block and head, dual overhead camshafts (DOHC), and direct fuel injection. This compact, efficient design delivers surprising power and torque for its size, making it ideal for GM's global small car platforms.
Fitted primarily to the Chevrolet Equinox and GMC Terrain, the LKJ was engineered to provide strong low-end torque and responsive acceleration while maximizing fuel economy. Emissions compliance for all production years is achieved through precise electronic control, direct injection, and catalytic converters, meeting US EPA Tier 3 Bin 70 standards.
One documented service concern is premature failure of the high-pressure fuel pump, which can lead to no-start conditions or loss of power. This issue, referenced in GM Service Bulletin PIC-6522, is attributed to internal wear in early production units. GM later revised the pump design for improved durability.
All production years (2017–Present) meet US EPA Tier 3 Bin 70 emissions standards (EPA Engine Family Code GMX-LKJ).
The GM LKJ is a 1,490 cc inline‑three turbocharged petrol engine engineered for compact SUVs (2017-Present). It combines a DOHC valvetrain with direct injection and a turbocharger to deliver strong low-end torque and class-leading fuel efficiency. Designed to meet stringent US EPA Tier 3 Bin 70 standards, it offers a compelling blend of performance and economy for its segment.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,490 cc | |
| Fuel type | Petrol | |
| Configuration | Inline‑3, DOHC, 12‑valve | |
| Aspiration | Turbocharged | |
| Bore × stroke | 74.0 mm × 86.6 mm | |
| Power output | 170 hp (127 kW) | |
| Torque | 203 lb-ft (275 Nm) | |
| Fuel system | Gasoline direct injection (GDI) | |
| Emissions standard | US EPA Tier 3 Bin 70 | |
| Compression ratio | 10.0:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | Single turbocharger (BorgWarner) | |
| Timing system | Chain-driven | |
| Oil type | DEXOS1 Gen 2 (SAE 5W-30) | |
| Dry weight | approx. 240 lbs (109 kg) |
The turbocharged direct injection design provides strong low-end torque ideal for city and highway driving but requires strict adherence to 7,500-mile oil change intervals using DEXOS1 Gen 2 oil to prevent turbo and chain wear. Extended oil intervals can accelerate component wear. The direct injection system is prone to intake valve carbon buildup, which may require cleaning after 60,000 miles. GM Service Bulletin PIC-6522 details the updated high-pressure fuel pump for affected vehicles.
Oil Specs: Requires DEXOS1 Gen 2 specification oil (GM Service Manual SM-900). This is mandatory for warranty compliance and engine longevity.
Emissions: Certified under US EPA Tier 3 Bin 70 for all model years (EPA Engine Family GMX-LKJ).
Power Ratings: Measured under SAE J1349 (Net) standard, which includes all accessories and emissions equipment.
GM Service Manual SM-900 (Chevrolet Equinox 2018-2023)
GM Engineering Specification ES-900
GM Service Information Bulletin PIC-6522
US Environmental Protection Agency (EPA) Engine Family Database
SAE International: J1349 Engine Power Certification Standard
The GM LKJ was used across GM's compact SUV platforms with transverse mounting. This engine received platform-specific adaptations-different engine mounts and accessory brackets for the Equinox vs. Terrain-and shares its core architecture with the L3A 1.5L turbo. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on a machined pad on the front of the engine block, near the timing cover (GM Service Manual SM-900). The 8th digit of the VIN is 'J' for LKJ-equipped vehicles. Visually, the compact inline-three configuration with aluminium construction, centrally mounted direct fuel injectors, and a single turbocharger on the exhaust manifold is distinctive. Critical differentiation from the naturally aspirated LCV: The LKJ has a turbocharger and direct injection, while the LCV is naturally aspirated with port injection. Parts are not interchangeable.
The LKJ's primary reliability risk is high-pressure fuel pump failure, with elevated incidence in early production or high-mileage vehicles. GM service data indicated a notable number of pump replacements before 80,000 miles, while common owner reports cite turbocharger wastegate issues as a secondary concern. Infrequent oil changes and use of non-DEXOS oil make turbo wear critical.
Analysis derived from GM technical bulletins (2017-Present) and aggregated owner repair data (2019-2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about GM LKJ.
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Regulation (EC) No 715/2007
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