When my car of 10 years and 100,000 miles decided not to go anymore the nice people at Firestone recommended the nice people at Dennis Automotive to work on the transmission. Unfortunately GM is dumb and the transmission in my car can not be replaced and not rebuilt so a new one was ordered. What was really cool about the guys here they had my old transmission out of the car and it was ready for the new transmission so instead of being out of a car for an additional day I was back on road the same day the transmission came in. Unfortunately GM sent a crap transmission and I was back to square one, but Mark had the warranty paperwork done and a replacement transmission ordered, and installed quickly.