The second-generation Chevrolet Silverado HD, built on the GMT900 platform, debuted for the 2007.5 model year. It was a major step up from its predecessor, featuring a fully-boxed frame for increased rigidity, a more modern interior, and revised powertrain options. The two main engine choices were the 6.0L Vortec gasoline V8 and the highly sought-after 6.6L Duramax turbodiesel, paired with the robust Allison 6-speed automatic transmission.
These trucks aren't typical collector items, but they are prized by enthusiasts for their immense capability and relative simplicity. The 2007.5-2010 models with the LMM Duramax are particularly desirable as they predate the use of Diesel Exhaust Fluid (DEF), simplifying the emissions system. Later LML models (2011+) offered more power but added DEF complexity. Clean, low-mileage Duramax trucks in high-trim levels like LTZ are the most coveted.
The market for GMT900 HDs is almost entirely driven by condition, mileage, and configuration, not rarity. While high-mileage work trucks can be found for very little money, pristine examples, especially those with the Duramax engine, can still fetch strong prices. They represent a sweet spot of modern comfort and brute strength for buyers who need to tow and haul.
Buying Tips
- Check the frame, rocker panels, and cab corners for rust, a common issue on trucks used in northern climates.
- On LMM Duramax models (2007.5-2010), look for signs of a problematic Diesel Particulate Filter (DPF) and listen for injector ticking.
- The front suspension and steering components like ball joints and tie rods are known weak points; check for looseness or clunking sounds.
- For 2011 and newer LML Duramax models, be aware of the potential for CP4.2 high-pressure fuel pump failure, which can be a very expensive repair.
- Verify the Allison transmission shifts smoothly and the fluid is clean; 'limp mode' can indicate serious internal issues.
Prices range from under $2,000 for well-used work trucks to over $43,000 for low-mileage, top-spec Duramax models.
343 Chevrolet Silverado Heavy Duty 2nd Gen vehicles have been tracked across auctions and listings on Hypercars, with 41 currently live. Sold prices range from $500 to $110,000.
Data sourced from Bring a Trailer, Cars & Bids, eBay Motors, PCarMarket, and Collecting Cars. Updated daily.
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