My wife was on a 400 mile trip last weekend. The check engine light came on so I told her to take it to a garage when she got to her destination. The mechanic put it on the computer and said every possible code for the Trailblazer came up. He said we either have the worlds worst lemon or the computer glitched. He reset the computer module and it hasn't come back on yet. Have yours checked and see what is going on. You won't know unless you take it in to have it checked.
