Engine repair service near East Derry, NH

Reliable Transmission Rebuilding has been in business since 1997. Our specialty is rebuilding transmissions, differentials and transfer cases for most auto and truck makes. I’m Cliff Bissonnette, owner and operator. I have been a mechanic most of my working years. Today’s transmissions can be a challenge. I’m trained in the electro mechanical field. I have gained my knowledge in Electronics by working on fighter jets during my military service.

Had problems with previous shops. Car always pulled after alignment. After visiting Atech the problem no longer exists. Very pleased! Super clean shop, very professional!

Factory scheduled maintenance and repair of all makes and models. We are a small company with two technician who have over 50 years of combined experience. One of these technicians is the owner of the company so customer satisfaction is our top priority.

I found Paul through a recommendation of a friend. As a loyal BMW owner for many years, and one who babies my car and want to make sure it's got the best care, I was really happy to find Paul. He is not only a BMW owner, but knows these cars inside and out. I had a heating system issue, we spoke about it over the phone twice, he ordered more parts than needed so when I brought it in he had the correct part (regulator) on him and fixed it within an hour. He simply returned the part that was not needed. I was able to get work done in the waiting room (with wifi) and when I recently had another issue (cracked rim), he quickly diagnosed the problem too. It's great to find a mechanic I can trust AND who is reasonable (I priced him about against another non-dealer BMW mechanic and he was a bit cheaper!). Thanks Paul for your help and care. When my car is in need of service again I'll certainly be back!