One problem related to hood hinge has been reported for the 2003 Chevrolet Trailblazer. The most recently reported issues are listed below.
My truck hood latch and area surrounding is so rusted going down the road the hood just bounces like its going to come loose. I called an assortment of mechanics and they say its a common and big problem with the Trailblazer! they do not come with a hood seal to stop the elements from entering the engine compartment thus the rusted hood front and latch. This is very dangerous and I don't think the consumer should pay for new hoods when the trucks donot come with the proper protection!.