The Chevrolet LXT is a 2,694 cc, inline-four gasoline engine produced between 2019 and 2023. It features dual overhead camshafts (DOHC), variable valve timing (VVT), and direct fuel injection (Ecotec), delivering 308 hp (230 kW) and 275 lb-ft (373 Nm) of torque. Designed for transverse mounting in performance-oriented SUVs, it combines turbocharging with advanced combustion control to deliver strong low-end response and highway passing power.
Fitted to models such as the Chevrolet Blazer RS and Chevrolet Trailblazer RS, the LXT was engineered for dynamic driving with enhanced throttle response and sport-tuned calibration. Emissions compliance was achieved through a close-coupled catalytic converter, cooled exhaust gas recirculation (EGR), and three-way catalyst, allowing the engine to meet EPA Tier 3 Bin 30 and Euro 6d standards across major markets.
One documented concern is high-pressure fuel pump (HPFP) actuator wear observed in 2020–2021 production units, highlighted in General Motors Service Information Bulletin 21105. The issue arises from cam lobe contact stress on the pump’s drive mechanism, leading to reduced fuel rail pressure and misfires. GM issued a revised HPFP with improved surface hardening in 2022 to resolve the condition.
Chevrolet
Production years 2019–2020 meet EPA Tier 3 Bin 50 and Euro 6c standards; 2021–2023 models comply with EPA Tier 3 Bin 30 and Euro 6d (EU Commission Regulation 2018/858).
The Chevrolet LXT is a 2,694 cc inline-four gasoline engine engineered for transverse FWD/AWD performance platforms (2019–2023). It combines turbocharging with direct fuel injection to deliver responsive low-end power and strong mid-range performance. Designed to meet EPA Tier 3 Bin 30 and Euro 6d standards, it balances drivability with stringent emissions compliance.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 2,694 cc | |
| Fuel type | Gasoline | |
| Configuration | Inline-4, DOHC, 16-valve | |
| Aspiration | Turbocharged | |
| Bore × stroke | 88.0 mm × 110.0 mm | |
| Power output | 230 kW (308 PS) @ 5,600 rpm | |
| Torque | 373 Nm @ 3,000–4,000 rpm | |
| Fuel system | Direct fuel injection (DFI) | |
| Emissions standard | EPA Tier 3 Bin 30, Euro 6d | |
| Compression ratio | 10.0:1 | |
| Cooling system | Water-cooled | |
| Turbocharger | Single-scroll turbo (Honeywell) | |
| Timing system | Dual chain (primary and secondary) | |
| Oil type | GM dexos1 0W-20 | |
| Dry weight | 168 kg |
The LXT's turbocharging provides strong low-RPM pull ideal for spirited driving but requires adherence to 10,000-mile oil change intervals to prevent turbo bearing and timing chain wear. GM dexos1 0W-20 oil is essential due to its thermal stability and compatibility with the direct injection system. The DFI system demands TOP TIER detergent gasoline to prevent injector clogging. Post-2022 models feature updated high-pressure fuel pumps with improved surface hardening; pre-2022 units should be inspected per GM SIB 21105. Catalytic converters require monitoring to avoid thermal degradation from prolonged rich mixtures or misfires.
Oil Specs: Requires GM dexos1 0W-20 specification (GM SIB 21105). Replaces GM 4718M and earlier standards.
Emissions: EPA Tier 3 Bin 30 applies to all 2021–2023 models (EPA File EPA-2019-CHEV-013). California models meet SULEV30 standards.
Power Ratings: Measured under SAE J1349. Output assumes 91 octane fuel (GM TIS Doc. 31508).
General Motors Technical Information System (TIS): Docs 31508, SIB 21105
EPA Certification Database (EPA-2019-CHEV-013)
SAE International: J1349 Engine Power Certification Standards
The Chevrolet LXT was used across Chevrolet's Theta/Gamma platforms with transverse mounting and shared architecture with GMC variants. This engine received platform-specific adaptations-reinforced cylinder heads in the Blazer RS and revised exhaust tuning in the Trailblazer RS-and from 2022 the facelifted Trailblazer models adopted the LXT with updated fuel pump and ECU calibration, creating interchange limits. Partnerships allowed GMC's Acadia to use the LXT with minor calibration differences. All adaptations are documented in OEM technical bulletins.
Locate the engine ID tag on the passenger side cylinder head near the exhaust manifold (GM TIS 31508). The 8th VIN digit indicates engine type ('L' for LXT series). Pre-2022 models have silver valve covers with black coil packs; post-2022 units use black valve covers with red accents. Critical differentiation from LM2: LXT is turbocharged with higher output, while LM2 is naturally aspirated. Service parts require model year verification - high-pressure fuel pumps for 2020–2021 models are incompatible with 2022+ due to internal redesign (GM SIB 21105).
The LXT's primary reliability risk is high-pressure fuel pump (HPFP) actuator wear in early production models, with elevated incidence in high-load and stop-start applications. Internal GM quality reports from 2022 indicated approximately 4% of 2020–2021 units required pump replacement before 70,000 miles, while NHTSA field reports confirm related misfires and SES light entries. Frequent thermal cycling and aggressive driving accelerate wear, making timely inspection and preventive replacement critical.
Analysis derived from General Motors technical bulletins (2019-2023) and NHTSA failure statistics (2020-2024). Repair procedures should follow manufacturer guidelines.
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