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Fuel economy targets for cars and light trucks each increase 8 percent for 2024 MY, 8 percent for 2025 MY, and 10 percent for 2026 MY. NHTSA projects that the updated targets lead to an industry-wide average of 49 MPG by the 2026 model year given a fleet mix of 48 percent passenger cars and 52 percent light trucks.
The Duramax I6 engine is a diesel engine available in select models of General Motors light-duty trucks and SUVs. Applications include the Chevrolet Silverado/GMC Sierra 1500 , Chevrolet Suburban/GMC Yukon XL , Chevrolet Tahoe/GMC Yukon , and Cadillac Escalade (both short wheelbase and ESV).
The Active Fuel Management system can shutdown the middle two cylinders under low-power conditions. [2] Cylinder liners are spun nodular iron. [2] The low-output work truck variant runs 10 psi of boost, the 390 lb⋅ft variant runs 20 psi, and the 430 lb⋅ft variant runs 27 psi. [2]
DMAX originally was announced in 1997 [1] as a 60-40 joint venture [2] between and operated by General Motors and Isuzu.Diesel engine production started in July 2000. [3] The company's Duramax V8 engine has been extremely successful for GM, raising that company's diesel pickup market share to 30% in 2002, up from approximately 5% in 1999.
This 305 was actually from GMC's medium-duty truck line. It featured high torque but had notoriously poor fuel economy. Transmissions were a 3-speed and 4-speed manual, the automatic Powerglide, and in the GMC models, the dual-range Hydra-Matic from 1960 to 1962. A 15-passenger conversion was done by Stageway of Fort Smith, Arkansas.
In addition to automobile and truck engines, ... 2012–2022 2.5 and 2.8 litre Duramax ... This page was last edited on 1 December 2024, ...
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