<img title="GM's Big and Little Pickups Are in Transition" src="http://blogs.cars.com/.a/6a00d83451b3c669e2017d3bc28408970c-800wi" border="0" alt="GM's Big and Little Pickups Are in Transition" class="excerptimg"/>As plants prep to make significant upgrades, dealers are loading up on Colorado/Canyon and Silverado/Sierra.
