One problem related to gas recirculation valve (egr valve) has been reported for the 2008 Chevrolet Aveo. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2008 Chevrolet Aveo based on all problems reported for the 2008 Aveo.
I purchased this vehicle brand new. The first winter I had it, the throttle body seized leaving the throttle open and the engine racing - the car has a manual transmission, therefore I was able to depress the clutch and pull it over. The local Chevrolet dealer in circleville, OH performed a technical service bulletin on the car, rerouting the egr system & removing some parts around the throttle body. On subsequent events, the car experienced severe loss of power and surges. The throttle body was replaced. The problem occurred again with the same trouble code being set. The car is now on its third throttle body (tps sensor cannot be replaced separately) this model year has a throttle-by-wire engine control system. My car still suffers from an intermittent engine trouble codes related to the throttle body and surging problems. Finally, the manual transmission broke its internal shifting mechanism and the car locked itself in gear. At the same time, the clutch did not seem to function. I am afraid to drive with family members in this car.