More on General Motors' (GM +1.9%) June U.S. sales: The automaker struck a 6% gain in sales...

More on General Motors' (GM +1.9%) June U.S. sales: The automaker struck a 6% gain in sales behind the strength of smaller Chevrolet models (mini and compact) and fresh Cadillac models. Sluggishness with GMC and Buick during the month held back sales growth. What to watch: Could July be even better? The 2014 Chevrolet Silverado pick-up truck debuts to what is expected to be brisk demand.