O'Neil GMC

O'Neil GMC O’Neil GMC is a premier provider of GMC and GM Certified Pre-owned automobiles. CUSTOMER SERVICE- Our customers are the reason we exist.

Through a partnership with quality conscious clients, we guarantee complete satisfaction with our products and services. Our commitment to quality is reflected in our concern and response to customer needs. EMPLOYEES- O’Neil’s employees are the backbone of the company and the foundation upon which our success is built. O’Neil’s growth is a direct result of the performance and professionalism of ev

ery individual. We are committed to employee development well being and growth. Employees are our most valued assets!

Catch the summer wave of savings in this 2026 GMC Acadia Denali! Stock number T409 Save up to $3,750 off MSRP or take ad...
06/17/2026

Catch the summer wave of savings in this 2026 GMC Acadia Denali! Stock number T409

Save up to $3,750 off MSRP or take advantage of financing as low as 2.9% APR!

⭐️ Super Cruise
⭐️ Panoramic Sunroof
⭐️ Downpour Metallic Exterior

Call, visit us in-store, or online to start your summer in style!

📍869 W Street Road, Warminster PA 18974
📞 (215)309-8208
💻 https://www.oneilgmc.com/new-Warminster-2026-GMC-Acadia-Denali-1GKENRKS2TJ267573

Summer Showstoppers Are Here 🔥Car show season is here—and we brought the heat.4 performance icons. One lot. No boring dr...
06/11/2026

Summer Showstoppers Are Here 🔥

Car show season is here—and we brought the heat.

4 performance icons. One lot. No boring drives.

🏁 2022 Corvette Stingray 3LT - $73,295
Supercar-inspired performance

🏁 2016 Mustang GT - $38,500
5.0L V8 muscle

🏁 2023 Camaro 1LT - $31,986
Sharp modern performance

🏁 2023 Challenger R/T - $37,995
Classic American muscle

Don’t show up to car season in something forgettable.

O’Neil GMC
📍 869 W Street Road, Warminster, PA 18974
📞 (215) 672-0900

Links in comments or message us for details.

Gear up for summer adventure with up to 25% off1 a minimum purchase of eligible accessories during the GMC Accessories E...
06/10/2026

Gear up for summer adventure with up to 25% off1 a minimum purchase of eligible accessories during the GMC Accessories Equip to Explore Event.

GMC Accessories

The best in safety, control and entertainment - OnStar One gives you the features to take your drive to the next level.G...
06/02/2026

The best in safety, control and entertainment - OnStar One gives you the features to take your drive to the next level.

Get the OnStar One Plan: https://shop.onstar.com/

A master of maneuverability, the GMC HUMMER EV makes high precision the standard.
05/29/2026

A master of maneuverability, the GMC HUMMER EV makes high precision the standard.

Learn More

Command power, capability, and comfort with the GMC Sierra Denali Ultimate.
05/27/2026

Command power, capability, and comfort with the GMC Sierra Denali Ultimate.

Learn More

Today we were honored to be part of the Memorial Day Parade in Warminster, PAOur O’Neil GMC Sierra had the privilege of ...
05/25/2026

Today we were honored to be part of the Memorial Day Parade in Warminster, PA

Our O’Neil GMC Sierra had the privilege of pulling the band through the parade as the community came together to remember and honor the brave men and women who made the ultimate sacrifice for our country.

Thank you to everyone who came out today!❤️🤍💙

Address

869 W Street Road
Warminster, PA
18974

Opening Hours

Monday 9am - 8pm
Tuesday 9am - 8pm
Wednesday 9am - 8pm
Thursday 9am - 8pm
Friday 9am - 8pm
Saturday 9am - 5pm

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