Our Reviews

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DealerRater Nov 24, 2025

Awesome experience. My sales person Tara went "above and beyond" to make the process smooth and kept me informed. I couldn't be happier with my new Tahoe.

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DealerRater Nov 13, 2025

Very pleasant experience! Brian was very helpful and knowledgeable all around, was able to answer any questions I had in seconds. And the rest if the staff was very helpful and friendly as well. My daughter's and I are very happy with our New 2026 GMC Sierra!

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DealerRater Apr 8, 2024

Purchased a new vehicle, my sales person was GREAT! On the other hand the sales dept management was horrible, not only rude to myself but also the staff. The management really needs a lesson in manners and being respectful. Third dealership in a week, and disrespect was very obvious and customer service was horrible.

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DealerRater Dec 4, 2022

Best service ever! Andy made the process so smooth for us. Everything about this dealership is wonderful!

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DealerRater Sep 17, 2022

My husband and I recently purchased a new Tahoe, and Stephen, Rusty, and staff were so kind, helpful, and easy to work with! If you are ever in the Rockingham area and looking for a new ride, check these guys out! Thank you again to Dieffenbach for all of your help and hospitality last week! We appreciate you all!

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DealerRater Jun 6, 2022

we where traveling from Southport to Niagara Falls, stopped on our way in Rockingham. My husband hear this noise and said it’s probably our brakes. We pulled into Dieffenbach dealer ship, and ask f they could help. They repaired the brake pads and roter system. Big shout out to the Service Manager that day, and the mechanics which did a super job getting us back on the road. Thank you for your excellent service. Now we where abel to meet our kids at Niagara Falls and we celebrated our 50 th anniversary. We will always recommend Dieffenbach Dealer to others. ... Read More

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Welcome to Dieffenbach GM Superstore

Thank You for Choosing Dieffenbach GM Superstore

Dieffenbach GM Superstore in Rockingham, NC treats the needs of each individual customer with paramount concern. We know that you have high expectations, and as a car dealer, we enjoy the challenge of meeting and exceeding those standards each and every time. Allow us to demonstrate our commitment to excellence!

Our experienced sales staff is eager to share its knowledge and enthusiasm with you. We encourage you to browse our online inventory, schedule a test drive, and investigate financing options. You can also request more information about a vehicle using our online form or by calling (910) 997-2500.

If you don’t see a particular vehicle, click on CarFinder and complete the form. We will gladly inform you when a matching car arrives. If you’d like to see a vehicle in person, click here for driving instructions to our site, or give us a call. We look forward to serving you!

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Dieffenbach GM Superstore 34.9242319580232, -79.7514782846546.