52 Colorado GMC Service Centers

Wonderful people to work with. - BILLIEPOINDEXTER

Wonderful people to work with. Corie reallly took care of me and made sure everything was taken care of.

Had an appointment for service at 08:30, informed the - ibcraigers1

Had an appointment for service at 08:30, informed the writer i had another appointment at 10;00. They took my truck back and I was leaving after an hour. Got excellent service.

We had the LS7 engine in our 2009 Corvette Z06 replaced - lewis.scottalan

We had the LS7 engine in our 2009 Corvette Z06 replaced under warranty and a considerable amount of other work conducted at the same time. The Master Mechanic (Todd Read) diagnosed the engine failure and other items that needed attention. Finding parts was a challenge, but Ed Acuti and Todd Read working with Burt and John in the Parts Department found everything we needed. Once the work was completed, Todd showed me photographs and explained what caused the LS7 engine to fail. He also let me check out many of the other parts that we had replaced that were not associated with the engine failure. We are still breaking the new engine in and so far so good.

Andrew was above and beyond excellent. - gwerwin60

Andrew was above and beyond excellent. He definitely went the extra mile arranging for GM roadside service and then stayed late on a Saturday to make sure we were taken care of. You don't find that level of service any more.

They did a wonderful job on installing the new Radiator! - sacassinis

They did a wonderful job on installing the new Radiator! I wish they would have kept me more informed of the status of this work.

Great service and appreciated the communication both - Melody

Great service and appreciated the communication both through text and phone. Courtesy from staff great

My service advisor Steve was great to work with, he was - hohenlage

My service advisor Steve was great to work with, he was quick to answer questions, get the service completed, and have me on my way. Would recommend Steve as a service advisor to anyone, it's why we've purchased three vehicles from Transwest.

A Masterclass in Integrity-Driven Service — Chris Bartow - Nic

A Masterclass in Integrity-Driven Service — Chris Bartow at Mike Mahoney Chevy In the ever-evolving landscape of the automotive industry, where efficiency often eclipses empathy, Chris Bartow of the Service Department delivers a rare and resounding reminder of what true customer care should look like. His conduct is not merely commendable—it is legacy-worthy. Chris stepped far outside the traditional boundaries of his role to ensure my family received not just support, but honest advocacy. With zero financial incentive and no obligation to be involved beyond the service bay, he assumed a leadership role in guiding us through a nuanced warranty situation. He collaborated seamlessly with Dustin in Finance to architect a solution that was both practical and in our best interest. He listened, not in a devoid manner, but with realism and empathy (I almost forgot what that feels like in such a chop shop/ bottom line kind of automated system we operate in today) And what’s more—he stayed with us every step of the way, following up, checking in, and making sure we felt informed, heard, and supported. Let it be known: this level of commitment is not standard—it’s exceptional. Chris’s ethic echoes the philosophies of storied businessmen like Henry Ford, Harold Helzberg, and Alfred P. Sloan—visionaries who built empires not only on innovation, but on trust, transparency, and a deeply rooted sense of duty to their customer and employee alike. Chris operates with those same timeless principles: integrity over incentive, care over commission, and a human-first approach that leaves a lasting impression. In a world of speed and automation, Chris brings back the high-touch, high-integrity service that once defined the golden era of American business. It would be a mistake for leadership at Mike Mahoney not to recognize the rare caliber of talent they have in Chris. He is not merely an employee; he is an ambassador of what this industry can be when heart, intelligence, and follow-through are prioritized. And to any discerning leaders in the automotive space, yes poachers take note…If you’re seeking someone who embodies both strategic thinking and authentic human connection, Chris is the kind of professional who elevates your entire brand. To Chris Bartow: Thank you. You reminded us that integrity still has a home in this industry. To Mike Mahoney Chevrolet: You’ve got a diamond. Invest accordingly.

Mike Kelley, the turbo concierge, is by far the best man - abejar

Mike Kelley, the turbo concierge, is by far the best man for a shuttle. Always on time and never fails to make me feel welcomed to WCG. Always knows how to put a smile on everyone's face.

Ben in service did a great job and informed me all along - romeb47

Ben in service did a great job and informed me all along the way. Very smooth experience.

They took long time to fix my car and painting was - motohikosato64

They took long time to fix my car and painting was mismatch color. But overall I satisfied so I give them 5 stars

I recently had a great service/parts experience. - Ben

I recently had a great service/parts experience. Nicholas in service and Dennis in parts did a great job helping me with a key fob issue. Nicholas was knowledgeable and patient. Also, Dennis was very helpful with my situation. Excellent customer service all around. Definitely heading back for my Ram/Dodge service and parts needs.

Best service Department in the State Thank you guys for - elway7350

Best service Department in the State Thank you guys for the honest and the professionalism!!!

GREAT SERVICE!!! - bccupcake

I've had the GREAT fortune of working with Keith Ketchum and his service department on my 2007 Chevy. Keith has gone to great lengths to get my truck up and running again. Having worked at dealerships previously I know that the only thing that any dealer has to sell that is different than the other dealers is SERVICE. Keith goes out of his way to make sure that customers get the BEST possible service. Would HIGHLY recommend King GMS's service department of all my family & friends!! So much respect for Keith Ketchum & his Service Team!! GREAT JOB ! ! !

I found mouse droppings inside the vehicle and drove - dutchgal72

I found mouse droppings inside the vehicle and drove right to Markley Motors - Will Stenner was so amazing- he got my car in immediately as I was heading out of town the next day. The “mouse problem” was taken care of. He was helpful, kind, answered all my questions and took the time to explain things. I have gone to Markley for 25 years and have only had great experiences.

good service; - judy

I feel that I always get good work done there and have not had any bad experiences with the mechanical department. Workers are friendly and appointments are within a reasonable time.

The Maroone Service has been exceptional since we - mmcdowell

The Maroone Service has been exceptional since we purchased our 2024 Buick Enclave. I especially want to commend service manager Dave Singh for his concern and care in making sure that we were completely satisfied. And we can't forget the high-quality service that technician Dan Allen gave us as well. Thanks, Mike Maroone Cadillac GMC service department for making our day brighter!

Markley Motors is great. - SMEBearly

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!!!

Feel so wronged and hussled for over almost $1,000. - Elizabeth Avery

Feel so wronged and hussled for over almost $1,000. Took our vehicle in for a broken A/C. They advised that a condenser was punctured and needed replacement and that should fix the issue. We picked the vehicle up and the lady said it's all fixed but the A/C should take a minute to kick in but it's working. Had a quick drive and it never blew cold but it was also towards end of Friday business so just drove home. Monday brought the vehicle back as it was definitely still blowing hot air. They advised they'll check it out again. A week later, get a call that they further more thoroughly diagnosed there is a punctured hose that is leaking air so that is why the A/C is not fixed however this is common in old cars but now an ADDITIONAL $2,200 repair. So, if this is common, why was this not assessed in the initial diagnostic when we came to a Jeep EXPERT to tell us what needed to be repaired to fix the A/C? Why would you not double check all related potential issues and talk a customer into a repair that wasn't going to fix the issue they came to you with. Now, out $900 for an unnecessary repair. Of course we would have never repaired it if the dialogue was we think this is the issue but of course we didn't FULLY DIAGNOSE THE ISSUE FROM THE START there could be something else. We would have to have just not repaired it, saved ourselves over $900 and the of course their words "understaffed staff's" time in fixing our vehicle. Feel beyond ripped off and sick about this waste of time, money, and level of service. My family members and I have been loyal Berthod customers for decades. Not only purchased so many vehicles as well as been loyal in many big service jobs. SO disheartening to have this outcome from a dealership we've trusted and been such good customers. Beyond disappointed this was our situation with no apologies or customer service in attempting to rectify this situation.

Installation of new radio and touch up paint scrapes. - Jan

We received a wonderful response to our radio issues. Excellent and timely service on our Pacifica. Also had touch up on parking lot scrapes which are now impossible to detect. All service and office workers were very cordial. Felt right at home!!!