Mark Cordes

I appreciate--so much--Convert taking care of my Buick. Working with Travis and others is a pleasure. Many thanks for the quality of service. I wish all at Covert a very Happy Holiday. Patricia Horridge Working with Travis and others is a pleasure. Many thanks for the quality of service. I wish all at Covert a very Happy Holiday. Patricia Horridge Dec. 19, 2025 More

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Very courteous, provided updates on repair completion, willing to make transportation available through provision of a loaner or shuttle service. I felt confident about the level of repair that was rende willing to make transportation available through provision of a loaner or shuttle service. I felt confident about the level of repair that was rendered. More

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I have always had a great experience at this dealership. This morning's visit was no exception. Express Advisor, Wyatt Dees got me back on the road in record time. He kept me updated throughout the proces This morning's visit was no exception. Express Advisor, Wyatt Dees got me back on the road in record time. He kept me updated throughout the process and took the time to explain the minor repairs my car needed. His special care was very noticeable and made a difference. Special thanks to Service Advisor, Mark Cordes for assisting me initially with the sign in process and for his can-do attitude. A true professional. More

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*Beware of Covert GMC on Research Blvd** Dishonest Practices and Poor Customer Service I'm writing to share my deeply frustrating experience with Covert GMC on Research Blvd and GMC as a whole. If Practices and Poor Customer Service I'm writing to share my deeply frustrating experience with Covert GMC on Research Blvd and GMC as a whole. If you're considering purchasing or servicing a vehicle with them, I strongly urge you to read this. I brought my 2022 Yukon XL, with only 12,000 miles, to Covert GMC because of a recurring electrical issue--the screen would randomly shut off while driving. After waiting over a week for an appointment and a loaner car, I finally dropped off my vehicle. I also asked them to handle an oil change since the "change oil soon" light had come on. I dropped off the car in perfect condition on a Thursday, but on Monday, I received a call from Mark, the service manager, asking for proof of my last oil change. I explained that my husband had taken care of it at Jiffy Lube, I didn't think to save the receipt. Mark immediately told me that without proof, my engine warranty was void, and there was nothing they could do. Mark completely ignored the reason I brought in the car--the electrical issue--as well as addressing any safety recalls. Instead, he claimed their technicians found brass and glitter in the oil, insisted the engine was "done," and quoted me $13,000 to replace it. When I asked for my car back so I could get a second opinion, Mark stumbled over his words, making it clear something wasn't right. When I picked up my car, I discovered that my dash cam had been disconnected, and all footage from the time my car was with them had been deleted. I know for certain my dash cam was tampered with. I then took my Yukon to Don Hewlett GMC in Georgetown for a second opinion which I had to pay for! ($200!) TO PROVE COVERT'S FALSE Diagnostic. Their team ran full diagnostics, test-drove the car, and found no issues with the engine or any reason for the warranty to be voided. They confirmed that while there was some glitter in the oil (normal for a new car), the engine was perfectly fine. Unfortunately, this wasn't the end of the nightmare. GMC had placed a watermark block on my engine, which voided my warranty entirely. Mark at Covert GMC explicitly told me this meant I could no longer receive service at GMC dealerships and that none of the repairs or issues that should have been covered under the bumper-to-bumper warranty (valid until 36,000 miles) would be honored. (I did record our conversations this is all in record and I DID LET HIM KNOW!) The situation became even more urgent when I started experiencing transmission issues at 32,000 miles. I repeatedly reached out to Alex and Nathan at GMC to remove the block, explaining that I couldn't afford to keep paying out of pocket for diagnostics and repairs when my vehicle should have been fully covered. After two years of back-and-forth with GMC, they finally admitted there was a mistake and removed the block. However, GMC refused to reimburse me for the significant expenses I incurred during those two years, including paying for diagnostics and repairs at other service providers while they ignored my case. I now regret ever purchasing this car and dealing with GMC. Despite paying a significant monthly amount for this vehicle, I've had to deal with constant electrical issues, transmission problems, and unprofessional customer service. I even tried to work with GMC to trade my lease for a brand-new car of a different model, but they refused to meet me halfway. All I asked was to stay at the same monthly payment, but they kept offering me much higher numbers, expecting me to pay more just to escape the endless issues with this car. GMC and Covert GMC have shown a complete lack of professionalism, honesty, and willingness to make things right. If it weren't for the honest team at Don Hewlett GMC, I'd still be stuck believing the lies Covert GMC told me about my vehicle. I strongly advise anyone considering Covert GMC or GMC products to think twice. More

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It got the job done and it was correct. Nothing to complain about at all Nothing to complain about at all More

by STEVE.MOORE27 Verified Customer Verified Customer

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great customer service and service agents. helpful in explaining new features i come across in the high tech vehicle. helpful in explaining new features i come across in the high tech vehicle. More

by marcelledyer Verified Customer Verified Customer

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Everyone is very nice and helpful and the valet rep who picked our car and returned it is exceptional. Caring, respectful and very prompt. picked our car and returned it is exceptional. Caring, respectful and very prompt. More

by RGOMEZFLA Verified Customer Verified Customer

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All went very smoothly, from scheduling appointment to the short wait time to have the maintenance done the short wait time to have the maintenance done More

by sdrix5 Verified Customer Verified Customer

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Replaced battery in a timely manner. Verified that the old battery was defective. Difficult to screw this up. Verified that the old battery was defective. Difficult to screw this up. More

by WWBOYD Verified Customer Verified Customer

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Prompt and professional and courteous. Very conscious of my time constraints and appointments I had. Very conscious of my time constraints and appointments I had. More

by techpm2020 Verified Customer Verified Customer

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