Built for demanding trucks and vans, GM's 6.6-liter L8T has become known for dependability. Its engineering offers some clues ...

GM now has two naturally aspirated 6.6L gasoline V8 engines in its full-size truck portfolio, but despite sharing the same displacement (and even identical bore and stroke dimensions), these two ...

The 2028 Chevy LCF (Low Cab Forward) lineup will introduce GM’s Gen 6 6.6L V8 gas engine across the 3500 HG, 4500 HG and 5500 XG models. The new powertrain appears in Chevrolet’s 2028 model-year data ...

General Motors is upsetting the apple cart with its formidable new truck challengers for the 2027 model year. The Chevrolet Silverado 1500 and GMC Sierra 1500 full-size trucks are completely ...

The speculation regarding a two-diesel engine lineup for 2027 is over. According to GM Authority, the 8.3-liter Duramax replaces the outgoing 6.6-liter unit as the only diesel option for the 2027 ...

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The biggest number in the US government's new fuel economy rules isn't a gas mileage estimate. Instead, the Transportation Department says that automakers' technology costs will fall through 2031 ...

Sony's best noise canceling headphones are on sale for an outstanding price during eBay's Labor Day Sale. Secondipity is offering a pair of Refurbished Sony WH-1000XM6 wireless noise canceling ...

JANESVILLE — The Gazette’s town hall-style forum on the GM/JATCO ballot referendum gave six panelists a chance to sound off Wednesday night on six questions about the referendum and the GM/JATCO site.

L8S 6.6-liter Naturally Aspirated Gas V8 The HD trucks do not get the new L78 6.6-liter V8, which will be reserved for light-duty 1500 full-size trucks. Instead, GM has updated the old 6.6-liter L8T ...

Despite having the same displacement, GM’s 6.6L V8s have two very different use cases and key differences ...