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GM Is Actually Putting an 8.3L Duramax Diesel in Its HD Pickups to Devour Ford

General Motors is equipping its heavy-duty pickups with an 8.3L Duramax diesel engine to compete with Ford and Ram. This move comes as GM emphasizes new V-8 powerplants amid a period of lackluster electric vehicle sales. The company is also introducing a 6.6-liter small block V-8 designed for power and reliability. These internal combustion updates coincide with the launch of the 2027 Chevrolet Silverado 1500 and GMC Sierra 1500, both of which feature updated pricing and next-generation engine technology.

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  • ✓ General Motors is equipping its heavy-duty pickups with an 8.
  • ✓ 3L Duramax diesel engine to compete with Ford and Ram.
  • ✓ This move comes as GM emphasizes new V-8 powerplants amid a period of lackluster electric vehicle sales.
🛡️ Source Corroboration: 6 independent reporting domains (60% confidence) ⏱ Read time: ~2 min

What changed

GM announced an 8.3L Duramax diesel engine for its heavy-duty truck lineup.

Live updates

  1. GM introduces 8.3L Duramax diesel for HD pickups

    General Motors is equipping its heavy-duty pickups with an 8.3L Duramax diesel engine to compete with Ford and Ram. This move comes as GM emphasizes new V-8 powerplants amid a period of lackluster electric vehicle sales. The company is also introducing a 6.6-liter small block V-8 designed for power and reliability. These internal combustion updates coincide with the launch of the 2027 Chevrolet Silverado 1500 and GMC Sierra 1500, both of which feature updated pricing and next-generation engine technology.

    Why it matters

    GM is reviving traditional truck wars by focusing on high-displacement engines. This strategy shifts priority back to combustion power as EV demand softens. The updates target the high-margin heavy-duty segment where towing and hauling capacity are primary drivers.

    Still unconfirmed

    • GM is putting an 8.3L Duramax diesel in its HD pickups.
    • GM is using new V-8 engines to compete with Ford and Ram due to poor EV sales.
    • A new 6.6-liter small block V-8 is designed for power and reliability.
    • Next-generation GM pickup engines will not require a dipstick to check oil.
    • The 2027 GMC Sierra 1500 has seen a spike in starting prices.

    What to watch next

    • Official specifications and horsepower ratings for the 8.3L Duramax
    • Pricing details for the heavy-duty models featuring the new diesel engine
    • Customer delivery dates for the 2027 Silverado and Sierra 1500
    Sources used for this update (6)
    1. CNBC — GM touts new V-8 engines in revived ‘truck wars’ with Ford, Ram amid lackluster EV sales
    2. Road & Track — Deep Dive: GM’s New 6.6-Liter Small Block V-8 Has the Power, Promises the Reliability
    3. MotorTrend — 2027 Chevrolet Silverado 1500 Pricing and Features Revealed: More Is More
    4. Detroit Free Press — Why no dipstick is needed to check oil in GM's next-gen pickup engines
    5. The Drive — GM Is Actually Putting an 8.3L Duramax Diesel in Its HD Pickups to Devour Ford
    6. Car and Driver — 2027 GMC Sierra 1500 Starting Prices Spike with New Generation
    confidence 60%
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