Used GMC Sierra 1500 trucks for sale near San Dimas, CA under $40,000

Arman was amazing to work with. I bought the truck without seeing it person and he provided accurate information. He was very patient and easy to work with. Absolutely no pressure to purchase. The vehicle was quickly shipped across the country and arrived as represented. I am very happy with the purchase and would strongly recommend this dealer to anyone looking for a used vehicle.

overall i like the truck alot, its a very dependable vehicle. it has its little quirks for a used truck. there's little things like the drivers door switch for the mirrors and the door locks that are not working as of now but i haven't taken the time to look into it as of yet. minor to me and i'm sure i can fix for a few bucks. nice riding and driving truck i would buy again.

Was the most amazing experience. Frank and Jerry treated as if we were royalty. Amazing

Am in disbelief every week at the Gas Pumps. Thou a big truck, mileage per gallons are 18 +. Last week it was 22.8. This week 19.78.

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

Good afternoon everyone, yes, I’m a lady and I’m an owner of a 2017 GMC Sierra 1500 Denali, it has a V8 motor fully loaded sunroof & also it has heated seats & steering wheel for the cold winter months & in those hot summer months you have A/C seats nothing better than that am I correct? It’s been times like that wouldnt trade for the world!! So for all you ladies who think BIG TRUCKS are just for men, go out there & buy one have them put on some electronic slide in/out rails & go out & show the shows the boss!! lol 😄 I’m out looking for a new one now either a 2500/3500 pearl white

I live in Las Vegas. After being lowballed by multiple dealerships in Vegas, I decided to try my luck with selling my car privately. Omar from STG reached out and offered me the private party value for my vehicle, as a trade-in to STG. He said STG could pick the car up for a small fee or I could drive it down to their location in Montclair, CA. I was very hesitant on working with STG, as there are so many horror stories about crooked used car dealers. I felt I would be in a vulnerable position if I were to drive the car there and they were to lowball me. I decided the risk was worth it to me for the extra money, and I drove it down. Immediately, Danny greeted me and started the inspection process. I had been upfront and honest with them about small imperfections the vehicle had, so there were no surprises. After inspecting the car, Danny confirmed that they would purchase the vehicle from me for the previously agreed-upon price. This is a standup dealership with great customer service. I feel I was treated very fairly and I would absolutely recommend them to anyone looking to get top dollar when trading their vehicle. They even gave me a ride to the airport after the deal was completed. Thank you for making the process so easy!

I purchased a new 2019 SLT with the X1 package. It has the Red Quartz Tintcoat paint. I usually never leave reviews, but honestly this is the most comfortable, nicest loking truck I've owned , and I've ownwd alot of them. The only issues I've had was the brake software was flawed, took it to the dealer on recall and they installed a new software patch, Other then that I love the styling, performance and the interior is very nice. No regrets

I had an amazing experience yesterday at Tustin GMC & Buick with Seth R.. I called him the night before to ask about the Sierra EV 2025, and he got right on it! We got the deal done in minutes, charged up the truck, and it was waiting for me to pick it up the next morning because I couldn?t make it that evening. This dealership is incredible! I usually buy luxury vehicles, and the service was just as great as when I do business with Porsche or Land Rover. George in finance was nothing short of amazing as well. The management is doing an incredible job keeping them going because they have such a great team. Every turn was met with a smile, and even in workout clothing, I felt like a valued customer. Thanks to Seth and George, this dealership is now my new pick-up truck home, and I?ll definitely be buying my pick-up trucks through Tustin GMC & Buick in the future.

My 2022 GMC Sierra 3.0 Duramax pickup truck is a good truck. I work on a farm and I also drive an hour to see my girlfriend. For the farm, it has excellent towing capability and for the hour long drive to go see my girlfriend, depending on the weather for traveling, I can get up to 35 miles to the gallon!

This was one of the best experiences I had purchasing a vehicle everyone was kind a very knowledgeable. This was the quickest I've ever purchased a car thank u !!!

This truck has a jerk when changing gears sometimes. I enjoy the truck overall easy to handle and comfortable. Drive with ease sight is good when driving.

Much Better Than Expected! Worth the Drive. Purchased a 2014 Toyota Sienna I drove several hours to this dealership to check out a specific 2014 Toyota Sienna—and I’m really glad I did. My salesperson, Chris, was outstanding from start to finish. He was extremely responsive, easy to work with, and genuinely honest. He answered all of my questions quickly and clearly, and was very personable without being pushy. The car was exactly as described, and the buying process was smooth. A day after I brought the Sienna home, the check engine light came on. I was obviously concerned since the sale was already finalized, but Chris immediately told me to bring it back in. The dealership diagnosed it as a faulty sensor and replaced it on the spot with OEM parts at no cost. That kind of post-sale support is rare, and really impressed me—they stood by their product 100%. One thing to note: there are dealership fees totaling about $1,400, which in my case were not negotiable, HOWEVER, the fees do include services like LoJack protection and a paint/interior protectant, so there’s actual value provided—not just markup. Also, if you look at the bottom of the ad, the dealership does mention that they are included. Overall, I’m very satisfied with my experience. The car is running great, the team was professional, and Chris went above and beyond. My experience was much more positive than the online reviews led me to expect. If you're considering buying from this dealership, I highly recommend reaching out to Chris!

handles and drives great, the electronics don't always work, mirrors don't always work, spray with wd 40, check engine light, EVAP culprit, auto nation has no luck with this, will drive it till the warrenty expires and its back to ford for me

The staff were very helpful. I did not want to buy new and they had the exact trucks I needed. I would recommend to anyone looking for reliable trucks without the spending top dollar for new.

Smooth ride strong motor decent gas mileage inside cab is loaded and very tastefully done along w easy access to knobs. Plenty of room. In back seat ! Aclassy looking Truck with a tacky looking owner!!

Everyone was very helpful from the very beginning at the time of arrival till the end of my visit I ended up buying RX 350 2025 awesome deal they even offered discounts and promotions. I didn?t even know about that?s why I gave Lexus Of Cerritos five stars awesome

This truck is the base model and that is exactly what we were looking for. A good solid truck without all the fancy technology. It drives like a dream, handles just as well and the interior is sleek and well designed. Perfect black on black exterior.... a man's truck.

So i went in already knowing what i wanted. Had my appointment already made and he was there waiting for me no issues. It was kind of strange to me how he didn’t know where the vehicles were so we had to go look for it. We walked for a bit then got into another vehicle to search for the vehicle. I think the lot and vehicle locations should be better situated. The buying process was easy and smooth. When the car was purchased i was waiting for a final cleaning and check of the car. This took forever. When i finally got the car. The inside of the windows were still dirty you can see the finger prints and the rear emblem had some chemical in it that oxidized the emblem. It took them a long time to seem like nothing had been done properly. I did appreciate the person helloing me to keep checking on me and letting me know the status instead of leaving me. The clean process and check process of the car needs to be better managed. It shouldn’t take that long for a half xxx job.

2021 GMC sierra 1500, 5.3, crew cab 4x4, 21000 miles. brakepad monitor lites up. dealership says needs brakes and rotors in back. one mo. on warranty. our rural roads dirty up the monitor. Needs new monitor. brakes look great to me. No noises. dealer says parts on order GM strike. Can't replace myself cause of computer...

Car Castle by far the best customer service, from sales rep to management Eddie everyone here is wonderful.Thank you Car Castle for my new Van!

My truck has a great appearance, inside and out. It is a pleasure to drive; and rides and performs great. It is the best truck I've ever owned.

Great customer service! Luis and Robert Salinas were AWESOME throughout the whole buying process . I would definite recommend this dealer to anyone looking to buy a great vehicle along with excellent customer service .

My GMC Sierra is the best ride I have had in all the years that I have been driving. I started driving in 1977. I love my new Sierra.

After getting the run around from multiple dealerships in LA/OC/IE I visited Auto Republic. Yes, I had my guard up after all the financing and heavy down payments other dealerships we're asking for before even giving me attention. The showroom was clean and the lot had so many dream cars. I found the perfect car for my family and had the assistance from the manager that was top notch. I'm writing this review since the single star reviews show the lack of reading details about add on features. Don't get upset with a dealership for having tracking on a car (saves on insurance) along with other key options that are great for your next car. I've referred family and friends, all had exceptional purchasing experiences and I'll get my next vehicle here as well.

We have owned our GMC Sierra 1500 for approximately 9 years now. The only real disappointment with the vehicle is that we had to have a full transmission replacement Just after the 100k mile without any warning whatsoever. The truck now has 107k miles on it and now , again out of nowhere, we are experiencing slipping in the trans and the engine light is now flashing. Very disappointing since we are starting to feel uncertain about the reliability of the vehicle now. The truck itself is gorgeous and shows ZERO signs of its age, sporting new rims and tires and a lifted body and no rust on the body at all. We hope there are no major issues with the engine as the vehicle has always been maintained as needed and on time for regular servicing at the dealership.