2008 Makes and Models: Medium-duty Class 4-6

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Heavy-duty trucks aren’t the only ones seeing some major changes in the coming year. Although some medium-duty truck makers are just tweaking their product lineups, others are launching new models, while others are introducing some big redesigns and new engines and platforms.

Here are some highlights of what’s new:

  • Chevrolet/GMC: On Topkicks and Kodiaks, a 6-speed Allison automatic transmission has replaced the traditional 5-speed model; manuals are no longer offered. Topkicks and Kodiaks will continue to have factory-engineered four-wheel drive, with the 4