Tier One Transmissions is your premier transmission shop in the Phoenix metro area! Tier one has decades of combined experienced in diesel and gas truck transmissions, and we can get your truck of choice back on the road, handling more power, and towing heavy in almost no time at all. Tier One are your foremost experts when it comes to built truck transmissions, and we offer a full range of diagnostics, repair, and rebuild services for the entire Phoenix area.

Our staff at Tier One live by a simple and direct set of core values that we put into every transmission build and customer interaction: