Dieffenbach GM Superstore

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(89 reviews)
Visit Dieffenbach GM Superstore
Sales hours: 8:30am to 8:00pm
Service hours: 8:00am to 5:30pm
View all hours
Service Sales
Monday 8:00am–5:30pm 8:30am–8:00pm
Tuesday 8:00am–5:30pm 8:30am–8:00pm
Wednesday 8:00am–5:30pm 8:30am–8:00pm
Thursday 8:00am–5:30pm 8:30am–8:00pm
Friday 8:00am–5:30pm 8:30am–8:00pm
Saturday 9:00am–1:00pm 9:00am–5:00pm
Sunday Closed Closed
New (910) 817-3126 (910) 817-3126
Used (910) 817-3129 (910) 817-3129
Service (910) 817-3133 (910) 817-3133


See all 69 vehicles from this dealership.

About our dealership

This seller has been on Cars.com since November 2018.
Our sales department has one purpose: to exceed your expectations from test drive to delivery. Our professional sales team is committed to a no-pressure high integrity approach to your ownership experience. Our goal is for you to feel that the vehicle you drive away in is the perfect one for you.

Our service department offers the best in automotive service to our customers. Our state-of-the-art facility features the most current diagnostic and repair equipment available and our highly skilled factory-trained technicians will deliver efficient quality vehicle care.
Nobody beats a Dieffenbach Deal!

Service center

Phone number (910) 817-3133

Service hours



(89 reviews)

A dealership’s rating is calculated by averaging its lifetime reviews.

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we where traveling from Southport to Niagara Falls,

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. Super job done well.

Consumer response

We had excellent service by the Dieffenbach Dealer in Rockingham, NC. Thank you again for all your help and great workmanship.


Buying custom

Very good experience. I had dealt with sales person before.


Dieffenbach Superstore

We have always dealt with Dieffenbach for all of our car needs. We are very loyal to them as they are to us.



The teamwork is excellent and customer service is on point.


Best dealership

Tara and Tori and the hole staff are really great. This is the best experience I've had at a dealership. I would highly recommend them to anyone looking for a new or used vehicle.



My in-laws bought a Buick Enclave and were very pleased from start to finish. I bought a GMC AT4 and I also was very pleased. Robbie Singletary was our go to guy and he did a great job. He took the time to show my in-laws how to use the new technology that the Enclave offered. Trust me, they needed all the help they could get. Hahahahaha. I would recommend if you’re in the market to give this team a shot before pulling trigger somewhere else. 5 stars for me!


Repair on 2010 Camaro

Deffenbach Cheverlot an outstanding dealership with excellent service. Diffenbach Cheverlot has set a standard for excellence that other dealerships will have to work extremely hard to try and match. My 2010 Camaro had a prior problem with eratic acceleration and deceleration which left me stranded. I had my car towed to another dealership to try and correct the problem. They replaced a pedal assembly, but 75 miles later the same problem left me stranded. This time I had it towed to Diffenbach Chevrolet. I was pleasantly surprised, how quick I received a phone call from their technician who had quickly diagnosed the problem. He explained in detail the reason I was experiencing this problem was due to a failure with my Camaro's computer board that was bad and needed to be replaced. The technician had one in stock and could replace the same day. The tech also reassured me that this would fix the problem. I have had absolutely no problems with the car since the repair. I have driven it 2,700 miles since being repaired. I am so pleased with this dealership that I trusted them to install a performance upgrade with cold air intake and a new Borla exhaust system. Not only is my car repaired, but my new performance upgrade can be felt and heard. I'm so pleased with my experience with this dealership that my next vehicle purchase will be with Diffenbach Cheverlot. Everyone from the owner, to sales and service set a Gold Standard of Excellence. I encourage you to try Diffenbach Cheverlot in Rockingham NC.



I have been going to dieffenbach for the past 3 years has given my car excellent service anyone that complains otherwise is just a disgruntled person.


I'm not satisfied, never again will I go there

My car left the same way it came, not running right. the same stabilitrek light was on. I was billed 430.00 for labor and told my truck was fixed and running fine. Not the case at all. Then they wanted to charge me a tow fee to bring it back. Al this after telling me 2 months ago it was ready only to Get down the road for it to cut off again. which by the way happened again today. By the way did I mention I bought parts almost 500.00, had them shipped to the dealer , that turns out I may didn't even need to buy, because my truck is not running correctly. they would not have gotten the one star, but this website made me pick one in order to submit my review.

Dealer response

While we can appreciate you wanting to share concerns on service here at Dieffenbach Cadillac, do know that all of our customers are dealt with honestly. Installing used parts always is a risk and, while no labor was charged in the nearly two months waiting for the part you provided us, the issues with the engine that you bring up are not related to the brake parts you provide for the work order. There are other aspects of the service done to your vehicle that should be handled directly with us and the opportunity to deal with you directly and honestly is all we ask. Aside form the actual service, we do hope you enjoyed the complimentary use of our service demo vehicle for two months as well. Reach out to me directly: Jeff Dieffenbach (910) 728-4615


Edward Reimer

Salesperson Person was helpful .Dealership is great hope they will find a chevy Avalanche for me .because I am be looking on. the internet thanks

Read all 89 reviews