Welcome to Markley Buick GMC

1. Monthly payment is $16.67 for every $1,000 you finance. Average example down payment is 10.3%. Must finance through GM Financial. Some customers may not qualify. Not available with lease and some other offers. Take new retail delivery by 6/30/26. 2. Deferred monthly payments for 130 days. Excludes residents of PA. Must finance with GM Financial. Some customers may not qualify. Down payment required at signing, if applicable. Finance charges accrue from date of financing. Not available with lease and some other offers. Take new retail delivery by 6/30/26. 3. Length of contract limited. Must finance through GM Financial. Some customers may not qualify. Not available with lease and some other offers. Take new retail delivery by 6/30/26. 4. Not available with some other offers. Take new retail delivery by 6/30/26.

2026 GMC SIERRA 1500 MODELS

0% APR FOR 5 YEARS for well-qualified buyers.1

Plus, no monthly payments for 130 days.2

OR

2026 GMC SIERRA HEAVY DUTY DENALI MODELS

4.9% APR for well-qualified buyers.3

Plus, $2,000 PURCHASE ALLOWANCE.4

Plus, no monthly payments for 130 days.2

1. Length of contract limited. Must finance through GM Financial. Some customers June not qualify. Not available with lease and some other offers. Take new retail delivery by 6/30/26. 2. MUST BE A CURRENT OWNER OF A 2012 MODEL YEAR OR NEWER NON-GM VEHICLE OR A CURRENT LESSEE OF A 2021 MODEL YEAR OR NEWER NON-GM VEHICLE FOR AT LEAST 30 DAYS PRIOR TO NEW VEHICLE SALE. Not available with lease and some other offers. Take new retail delivery by 6/30/26. 3. Deferred monthly payments for 90 days. Excludes residents of PA. Must finance with GM Financial. Some customers June not qualify. Down payment required at signing, if applicable. Finance charges accrue from date of financing. Not available with lease and some other offers. Take new retail delivery by 6/30/26.

0.9% APR
FOR WELL-QUALIFIED BUYERS.1

Plus, up to $2,250 PURCHASE ALLOWANCE for current eligible non-GM owners/lessees.2

Plus, no monthly payments for 90 days.3

1. Monthly payment is $18.37 for every $1,000 you finance. Example down payment is 28.3%. Must finance through GM Financial. Some customers may not qualify. Not available with lease and some other offers. Take new retail delivery by 6/30/26. 2. MUST BE A CURRENT OWNER OF A 2012 MODEL YEAR OR NEWER NON-GM VEHICLE OR A CURRENT LESSEE OF A 2021 MODEL YEAR OR NEWER NON-GM VEHICLE FOR AT LEAST 30 DAYS PRIOR TO NEW VEHICLE SALE. Not available with lease and some other offers. Take new retail delivery by 6/30/26. 3. Deferred monthly payments for 130 days. Excludes residents of PA. Must finance with GM Financial. Some customers may not qualify. Down payment required at signing, if applicable. Finance charges accrue from date of financing. Not available with lease and some other offers. Take new retail delivery by 6/30/26.

TRUCK MONTH

3.9% APR FOR 5 YEARS for well-qualified buyers.1

Plus, an additional $3,000 PURCHASE ALLOWANCE for current eligible non-GM owners/lessees.2

Plus, no monthly payments for 130 days.3

OnStar® plan, working electrical system, cell reception and GPS signal required. OnStar links to emergency services. Not all vehicles may transmit all crash data. Service coverage varies with conditions and location. Service availability, features and functionality vary by device and software version. Subject to user terms. See onstar.com for details and limitations.

OnStar One delivers the best in safety, control and entertainment

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The Markley family has been there for all of your family’s automotive needs since 1936.

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Welcome to Markley Buick GMC

Thank you for making your way to Markley Buick GMC, your certified Buick, GMC dealer serving drivers throughout Fort Collins and the surrounding areas. At our dealership, you’ll find a solid selection of new Buick, GMC models for sale, as well as a carefully inspected lineup of pre-owned vehicles. We also have a well-connected finance center run by a qualified team of finance experts, who can help you get the right loan or lease in a quick, easy, and transparent manner.

Our commitment to our customers continues well beyond the date of purchase. We also have a professional team of Buick, GMC technicians on hand with the skills and equipment to handle all manner of maintenance and repairs, as well as a full stock of authentic parts. Make your way to Markley Buick GMC in Fort Collins today for quality vehicles, a friendly team, and professional service at every step of the way. And if you have any questions for us, you can always get in touch at (970) 223-1234.

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Our Reviews

DealerRater May 13, 2026

We have many cars over the years from Michael and Markley Buick. Every step in the process was handled orderly and professionally.

DealerRater May 13, 2026

Dealership was neat and clean. Well stocked inventory. Had the vehicle we were looking for. Staff was polite and helpful

DealerRater May 12, 2026

Michael was an amazing help with my parents! Marley we will continue business with you! I am telling everyone in the Scottsbluff area about the gem that is Michael!

DealerRater May 6, 2026

Thanks Michael for working with us and answering my questions and I’m sure I’ll have more!

DealerRater Apr 25, 2026

Extremely fast and reasonable to work out a deal with. Michael was amazing - helpful, knowledgeable, plus none of the stuff you worry about encountering at a car dealership.

DealerRater Apr 20, 2026

Always a pleasure to work with. We've leased or purchased several vehicles from Markley.

DealerRater Mar 30, 2026

We have purchased and leased several vehicles from Markley and have always been satisfied with fair prices and fair trade in values. Michael Shelleman is always very helpful and knowledgeable in finding the vehicle we want and educating us with all the options and technology in the vehicle. We just wouldn’t shop for a vehicle anywhere else other than Markley. Thank you to Michael and Markley Motors. We love our new GMC Sierra.

DealerRater Mar 3, 2026

Tom Medina is knowledgeable of the GMC Sierra pickups and is great to work with. Didn't pressure the sale and helped with my decisions. I would recommend him to anyone.

DealerRater Feb 10, 2026

Michael was very well educated with the features of our vehicle. What I didn't care for was during the selling, Michael brought out all of the good points but at the end it was stressed to buy warranty protection for all of the bad reasons. I figured if the vehicle was that bad I may not buy.

DealerRater Feb 7, 2026

Michael was very informative and knowledgeable. He was easy to work with and made the overall experience great.

DealerRater Jan 28, 2026

We are repeat customers of Markley Buick GMC. We like the professionalism of the dealership, and we enjoy working with Michael Shelleman. He is very knowledgeable and he makes great coffee:)

DealerRater Jun 24, 2025

Markley Motors is great. Noe was wonderful and a great salesman. I've purchased approx 12 cars from Markley Motors and have always had great service. Went in for an oil change and tire rotation and killing time I took a test drive. Many hours later I drove out in a 2026 GMC TERRAIN AT4. Most expensive oil change of my life. I LOVE MY NEW CAR!!!

DealerRater May 28, 2025

I have been a customer of Markley Buick GMC since 2018 and have appreciated the service dept. We have recently purchased a 2026 GMC Terrain with the help of Tom Medina. Tom is a fantastic sales person. He is so friendly and knowledgeable. He made our recent purchase so easy and enjoyable. I would recommend him to anyone.

DealerRater Mar 20, 2025

Great service desk customer service, easy to get right in for set appointment, waiting time is appropriate and understandable for service and time of appointment, I am grateful for the business to mail out coupons and service reminders as I got to use personalized coupon this visit for a nice discount off the listed service price. All staff and employees are friendly especially sales agent Mike Shelleman who I see each time I’m there for service and who sold me my GMC two years ago that I still love and only get serviced at the dealership. I appreciate the appointment reminders and the followup call the day after to inquiry about quality of service at previous day appointment. Never had any issues or problems and will continue to do all my GMC service and sales at GMC Fort Collins, CO!

DealerRater Mar 13, 2025

Professional ,attentive service department. They found my problem, fixed it and called me to let me know it was ready. They even ran it through the wash before bringing it back to write up area for me to drive out.