Chevy Silverado, GMC Sierra, Chevy Colorado, & GMC Canyon Parts & Accessories

GM's lineup of Silverado, Sierra, Colorado, and Canyon trucks are some seriously tough and capable vehicles that can handle tough applications, all of them have a ton of hidden potential that only the right combination of performance parts and accessories can unlock. Tier One gives you everything you need to take your GM truck to the next level of power and performance so that you can tackle tough challenges both on and off the road. We here at Tier offer up a full line of built GM truck transmissions and transmission rebuild kits that can handle much more horsepower and torque than stock while fixing common transmission issues for improved reliability. Tier One also has a variety of GM truck performance parts and accessories, including cold air intakes, tuners, exhaust kits, leveling kits, and a whole lot more. We can help turn your Duramax Silverado or Sierra, 1500, Canyon, or Colorado from plain-Jane stock to something you can be proud of in almost no time at all. Check out our built Allison transmissions, built 8L90E transmissions, built 6L90E transmissions, built 6L80E transmissions, built 4L80E transmissions, or our built 4L60E transmissions. If you don't see something you're looking for, contact Tier One or call 602-399-5484!