"David You Were Great. Thank you!"

"David listened to my story and suggested a common failure for my troubled Chevy Trailblazer. I told David that the Chevy dealer replaced the part he suggested about a year ago and that had not cured my "roaring" noise. So, David and I went for a test drive. He said, maybe the brand new part from the dealer was defective, commenting that it does happen. David said he would pull the vehicle trouble codes to check for failures as a no charge courtesy...Guess what, the code indicate a failure of the dealer replaced part. At that point David said to go to the dealer and see if they'll warranty the problem. I went to the dealer and they warrantied the part. The problem was illuminated. David you were great. Thank you!" - Mike