Used GMC trucks for sale near Diamond Bar, CA

“The entire car-buying process was smooth, efficient, and genuinely professional. From the initial inquiry to driving off the lot, every step was handled with clarity and care. The staff provided prompt updates, transparent information, and a streamlined workflow that made the experience stress-free. Overall, it was a well-organized and highly satisfying purchase.

I bought this after going to the dealer just to look at colors. I had a 2016 Chevy 1500 LTZ that I loved. There was my down payment and took this Denali home. Only 2 options. Paint and moonroof. I thought my chevy with 3.42 gears was quick. This one goes with 3.23's. The ride is great. Fit and finish are perfect. My only complaint is this Bose/Apple play radio is not what the 2016 Bose was.

good buying experience on our 2021 Mazda 6 touring. good test drive with good explanations on all the good technology this car has to offer. was recently in to service, made a appointment. everything good, all questions answered. I was treated well.

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.

Sales personnel knowledgeable and helpful. Not close by but would definitely discuss a car purchase soon.

Overall I am very happy with my new Truck. GMC however needs to address their software glitch where the display screen intermittently stops working or the audio cuts in and out. I keep hearing a software update is being worked on but that was a while ago?

Great service Jay is my guy at the service department always takes care of me I never need to worry about my truck I know it?s in good hands

Any reviews on this vehicle is not correct. We are first owners and it’s been an excellent truck. We hate to see it go !

they were awesome! Amy Aguire the sales woman is wonderful! she helped every step of the way! Everyone there was friendly and low pressure. We did some mild negotiating for the price and they obliged by meeting us half way! We are very happy they made things so easy!

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.

Bought a certified 2015 BMW 535. Ultra clean and low miles. Smooth transaction. Fair value for my trade in. Overall very pleased with staff and process.

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...

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 .

Easy purchase experience, would recommend to anyone looking for a new car. Everyone there was friendly and made the whole process as smooth as possible

My online salesman Xavier was great! I live 2,000 miles away, and the whole transaction was done on my phone, and within 24 hours. Having to come up with a shipping company was the hardest part of the process.

Stong engine and smooth! Highly recommend for familys or someone who likes a smooth truck. Purchased new and have had zero issues since then. Love it!

Best people in the industry, great prices and selection of vehicles, i have bad credit but they got me into the car of my dreams

Great truck to own. The 2023 GMC Sierra Denali with the 6.2L engine delivers excellent power, smooth performance, and a refined driving experience. The ride quality, interior comfort, and overall build quality are outstanding. I have had no issues whatsoever, and it has been a reliable, enjoyable vehicle from day one. I would highly recommend it to anyone looking for a premium full-size truck.

I have had a couple warranty-covered issues with my otherwise-wonderful 2018 Pacifica. At J-Star, there was no hassle and they even noticed another warranty-covered item and took care of it for me.

I love it the look the interior mine is a red one and it looks so good and it’s my baby and it runs so good and the technology is off the chain

They were very helpful in transferring to the local dealer, providing the vehicle report, performing additional inspections and in the buying process. I would definitely shop with CarMax again.

2024 GMC sierra 1500 duramax 3.0 is great truck. Great ride and great MPG. 100% recommend to any prospective buyer. Love the truck and how it perform.

Very good customer service. Very nice and worked to help us buy a car

I bought my 2020 with 36k miles a couple of years ago and I now have 60k miles of trouble free very enjoyable driving. It was expensive, but worth every penny. The ride is so quiet and comfortable my wife and I prefer traveling in it instead of our 2018 Acura MDX which we also love. The 5.3 V8 has plenty of power and towing ability. The multi-function tail gate is genius, I hope to never be without one again. We so enjoy all the bells and whistles, especially the wireless phone charger. So glad I bought this truck!

I purchased pre-owned 2020 1500 SLT in February of this year. The truck rides comfortable and has plenty of room front and rear. My and I both enjoy it. My only drawback is the turn radius (lock to lock). It lacks compared to my wife's 2018 Yukon SLT, or the 2016 Ram I traded in. Have to many times maneuver twice to park it going forward or reverse. Otherwise happy with our purchase.

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.

Just purchased a Chevy Tahoe, with Jose and there team, and went excellent and smooth. Highly recommend this place! Thank you pro x motors.

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 have the 1500 double cab with standard bed. The reason I have this vehicle is I really like the 6.5 foot bed. The crew cab with same bed is just too long. The things I dislike about this model is that it only comes in the SLE model. For the 2025 that means the external mirrors do NOT have a power fold in and it does not have a seat memory for more that one driver. The power fold in for the mirrors is extremely important to me.

Bought a truck on the 10th and it was a great experience. Art answered all of our questions and the transaction was simple.

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

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 !!!

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.

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!

This is the nicest truck I have ever owned. Lots of features. Takes a while to learn what all it does but a really enjoyable vehicle.

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.

I bought a 2019 GMC Sierra Elevation. I traded in a FULLY loaded 2015 Sierra SLT, that I was really sad to see go, but the Elevation really sold me on styling and ride quality. I lost a couple high end bells and whistles, but the overall performance and look of the truck make up for it big time!