Welcome to
O'Neil GMC in Warminster, PA

At O'Neil GMC, we're a proud family-owned and operated GMC dealership in Warminster, and we're committed to providing you with the absolute best car-buying or -servicing experience. We take pride in delivering high-quality GMC vehicles along with exceptional customer service.

Our dealership hosts an expansive range of both new GMC vehicles and pre-owned models, including the latest EVs you’ve been searching for. Whether you're looking for a powerful new GMC Sierra truck, a sleek and comfortable Terrain SUV, or a modern electric car for a greener ride, we have you covered.

Shop New & Pre-owned GMC Inventory in Warminster, PA

When you want to upgrade to a new GMC truck or SUV, our team is standing by to assist. Come test-drive a new GMC Terrain or discover the first-class GMC Acadia features. Need something for tough jobs? Buy a new GMC Sierra 1500 or check out our used inventory for more great options.

Don’t forget to ask about our new lease specials and used vehicle offers to get an incredible deal. Our GMC financing experts are here to help you find the best loan or lease options for your needs.

GM Certified GMC Service & Parts in Warminster, PA

At O'Neil GMC, our dedication to your vehicle doesn't end when you drive off the lot. Our seasoned GM service team is equipped to help maintain your GMC for miles and miles. Whether it's regular maintenance like a oil change or comprehensive repairs, we’ve got you covered - plus, we offer convenient loaner vehicles for lengthier fixes.

Be sure to take advantage of our service specials to save on maintenance. Additionally, our GMC parts department stocks genuine GM parts, including components specially designed for your GMC, ensuring your vehicle gets the highest-quality care.

Visit O'Neil GMC Today

Conveniently located in Eastern Pennsylvania and easy to get to from Southampton, Warrington, and beyond, O'Neil GMC invites you to visit and see what we have to offer. Come experience how we combine a family-friendly atmosphere with a comprehensive selection of vehicles and exceptional service.

Stop by to explore our new GMC inventory, browse our pre-owned selection, or schedule your next service appointment. Embrace the O'Neil GMC difference today!