






Shop by Payment



The History of O'Meara
O'Meara has been serving Thornton, Northglenn and the rest of Colorado since 1913.

Welcome to O'meara GMC - Denver's Best
Our dealership is a great solution for any auto buyer, looking for a New GMC or Used Vehicles, Cars, Trucks, and SUVs. All you have to do is drop by our Thornton GMC showroom and pick what suits your needs the best, and our qualified and friendly staff will take care of the rest. We look after all your automotive needs, right from New and Used Vehicle Sales, Auto Service and Repair, GM Auto Parts, accessories, tires, as well as Automotive Financing options. Our GMC dealership is very conveniently located in Thornton near Westminster, CO. So, what are you waiting for? All Denver area GMC drivers can make the short drive to our dealership today in Thornton CO!
GMC AUTO SERVICE AND PARTS CENTER IN THORNTON
We offer parts, service, and auto body shop at O'meara GMC for your convenience. Our GM-certified technicians provide superior maintenance for your GM vehicles and all other makes and models and stand by their work. Thornton drivers will be glad to learn that keeping their automobile running well shouldn't be complicated or difficult. This is why our Certified GM service and auto parts center is a perfect option for Denver GMC drivers looking for the best in vehicle maintenance and repairs.
We look forward to meeting you and serving you in person at O’Meara GMC , the employees at look forward to your visit at our dealership. Give us a call or use our step by step Driving Directions for driving instructions from Denver, Thornton, Aurora, Golden, Littleton, Longmont, Henderson, Lone Tree, Colorado Springs, Boulder, Brighton, Pueblo, Loveland, and more.
Our Reviews
Ben for being up front and honest really appreciate it
Vince was great sales man. Highly recommend
It was good, no issues.
After going to 5 dealerships, O'Meara GMC was able to fix my cruise control and transmission issues. Jeff, Annissa and Chris worked with me to get me triluck fixed in reasonable time and kept me informed of the status.
All of the people at O’Meara were extremely helpful and understanding towards what we were looking for! David, specially, was extremely kind and knowledgeable not only on the car we ended up with, but on his current inventory of what they had. He was extremely patient and I would recommend him to anyone. Management was also amazing, outgoing, and willing to work with us.
Great dealership
David was awesome and super friendly
Great experience with Stuart today thank you for the help
OMG have you guys ever needed a car/truck go here they super nice
Very good service best dealership I’ve been too!
(Translated by Google) Excellent service (Original) Excelente servicio
I liked how chloe treated and took good care of us, like how she’s easy going .
David was very helpful, recommended my sister a good truck and I wasn’t even present till the end of it so that’s a first! 💪
Both Lorenzo and Ben dis a great job! Jeremy also was very professional and patient.
Ben and Lorenzo were fantastic team and appreciate their candor and professionalism.
Took in all my concerns and options to get things done
Jose and Vince were incredible! They did everything they could to get me into my Chevy Trailblazer! I highly recommend going to O’Meara and asking for them!!! AMAZING!!!
Jose and Vince were the two sales men that worked with us I would recommend them to anyone
Manny helped us get the exact truck we were looking for. Very helpful and professional.
Nice and respectful
Logan was great, was very helpful and caring, he gave me a lot of guidance through making a purchase. He is an outstanding employee.
Although it was a while to get all of my parts Anessa did such a great job she kept in touvh woth me and got everything covered ill be bringing my car back for sure
Lorenzo was friendly and great work with.
What great group of professionals. The wife and I had a great buying experience. Thanks guys Donnie Valdez
Other than it was hard to get an appointment and when we arrived they said was not on the schedule like we were told for the time and day. The service writer made sure we were taken care of, without a lot lost amount of time since we were waiting for the vehicle