No major problems.  Had coolant leak at rear of engine around 80,000 miles, replaced gasket, very thin surface area at this location. Check engine light came on several times around 100,000 miles. Dealer replaced oxygen sensor -was not the answer.  Final fix was replacing the catalytic converters. (I like my Chevy dealer, he sent me to a muffler shop down the street, -had a much better price than he could give me.)  No problems sense.

Do have an intermittent problem with windshield wipers,sometimes they do not work. -just a hum under the dash.  Work fine on sunny days, HA.  

never had any problems with it