Used 2023 GMC Sierra 1500 trucks for sale near Rancho Cucamonga, CA

Had to take my QX50 Luxe in for a repair and I had a really great experience the Service Consultant Mike Longridge is very Professional,Friendly & knowledgeable about his job and will definitely take my car back as needed in the future. It was also great to get my car back cleaner than when I took it in . Thanks so much. Yvonne A

I have a 2023 GMC Sierra 1500 Denali with the 3.0 Diesel engine. I have 20,000 miles on it at the time of writing this. Never owned a diesel before and now i don't think i will own another one without it. I LOVE the engine in this truck. Only complaint would be that it likes DEF fluid while towing so pick up some extra DEF before you head out to tow something. Put about 8K miles on it this summer without adding any DEF fluid. seems to use a little more in the winter or when towing. Very quiet for a deisel and the fuel economy is awesome. Driving 70 mph down the freeway this truck gets about 30mpg, Drive 55mph on regular highways and this truck gets almost 40mpg. All around driving for me is about 26mpg. I used to fill up twice a week with my gas motor and now only once a week. Wireless Apple Carplay works great and the voice texting and mapping is a big plus. I also have the new SuperCruise feature which is awesome. Get on the freeway and set the supercruise on and the truck drives itself until i get to my exit (about 28 miles from home to work). Bose stereo is out of this world and all the storage is great to. I have a swingout bed toolbox, aluminum roll up tonneau cover, Lighted black GMC front emblem, Gloss Black 22" wheels, All Black decals and my dual exhaust bezels are black as well. I rotate the tires and change the oil every 5,000 miles. Couldn't ask for a better truck. Might get the ultimate next time as that has the messaging seats which i kinda wish I had.

Anthony went above and beyond expectations to get the vehicle of my choice. Would highly recommend friends and family to purchase their next vehicle here.

Does anybody else’s truck just sit there after you put it drive? I have to bump the accelerator to have it go into gear. ??????????????????????????????????????????? ?????????????

Buen servicio. Empezando por Karen en costumer service y Willie que nos atendio en la muestra del vehiculo y Felipe en adquirir el vehiculo que estabamos buscando.. gracias..

Excellent comfort and very good truck, it is very functional in every way, both for business and for personal, it can be said that I have the 2.7L Turbo engine and I can move up to 11500Lbs already checked by me

Although the car we wanted didnt work out, the customer service was excellent. MARCUS is a STAR! He should be in management. I have brought many mercedes in the past. Carmax is turning the tide when it comes to purchasing vehicles. The best thing to do when you buy any car is to take it to another mechanic, and then bring it back to the place to be fixed within the warranty period. The Truck I purchased from them a year ago had a few issues but they did take care of it and I've not have any problems since. Carmax has set the bar high for purchasing returning and anything to do with cars. BRAVO!

Ok so I am sure my 1st review is not gonna be deleted but I have a new review for them as they have addressed my concerns and Because of 1 persons actions I am completely satisfied with the repairs and commitment that JOHN in service has made sure I was completely satisfied with the repairs so a big THANK YOU to John and anyone else who worked on this I will definitely be taking my truck back for service

Andrew was very good and helpful. Made the whole transaction easier and fast. Completely explained everything.

positive sales person knowledgable, positive kind will go back.. location great ease of access. price taxes dealer prep well explaine4d.. i will re check lot one week new inventory..thanks for opportunity

Fantastic dealership with professional and courteous staff.

dominique is an easy going sales person and made my experience comfortable to purchase my f-150

It was a great experience and Dom was the best! We will definitely come back for our next purchase.

Amazing service! Caring and attentive to my auto requests. Chris was a tremendous help. He was so patient and kind. Go get a car from STG! I have nothing but good things to say about my experience

Randy at STG auto was amazing and professional. He was able to work with me to get the rate I want and super satisfied. Highly recommended!

Dominique is very good customer service in my buying today for the Ram 2500 working with him was very easy

Austin, Zach, and Jaime were exceptional , they got a a great deal would definitely recommend to family and friends!

Great customer service and awesome to work with. All departments are knowledgeable and friendly. Thanks

Abraham was great he is the sales manager there that helped me get a great deal I was scared because I’m a first time buyer but he made the process smooth thank you

Great team ,friendly staff . Danny brewer was great and Sam the manager was very professional and pleasant to deal with

Randy was solid, he helped me & my friend the car we wanted. We got a good price and overall the service was excellent there. I would highly recommend coming here for a used car !

Carlos was very helpful and patient with us. He showed sincerity and honesty in his work and towards us. Overall, it was a great experience buying a car in this dealership.