Used GMC Sierra 1500 trucks for sale near Thornton, CO under $800,000

Great experience, happy with everything... Great service, friendly staff, great facility...very happy with a car... I will definitely recommend this dealership to all my friends and relatives...keep a good job...

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!

Everyone was very friendly and kind. Always keep in the loop of what was going on. Was not to long process to complete the whole 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!

DJ was my salesman and he did an amazing job! I highly recommend going to Alpine Buick. The Facility is beautifully represented. Always eager to help.

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, Adam at the service Deparment was very profecional explaining everything to me quick response to get the truck schedulefor service. very satisfied with auto nation broadway.

Got the duramax diesel and getting 24 city and 32 highway is very good. Truck drives nice and is very comfortable. My 2 issues with this truck is the backup camera at night is useless (very dark) and interior lighting is not very good. You would have thought a 78k truck would have footwell lights, but it doesn’t.

Fantastic people, the process was so easy and stress free…I just stopped by on a Saturday over the 4th of July weekend just to look at a Hummer ev (I planned on Buying another Hummer I found online) and I left the dealership 3 hours later with a new car and new friends…I dealt with Charlie and Ryan, from the second I stepped on property and met the guys for the first time I felt like I had know them for years…I am a great judge of Character and there easy going positive personalities where very genuine and so authentic, it made me and my wife feel as if we where dealing with a good friend or family member that had our best interests in mind. From start to finish and even 3 months later I am still feeling the warmth from them. I will never buy another car from another dealership as long as Ryan and Charlie are there…AutoNation is Lucky to have them on there team and I am reminded of my experience every day I get into my new Hummer EV and I will continue to pass the good word on to everyone I encounter!!! Thanks Alpine Buick GMC

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.

Staff very friendly and efficient. Jordan very was helpful. This was a good buying e,perience

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.

Best ford dealership! Team is smart, kind and fast. Had a great experience working with them and even with a small issue with my new car is was fixed and I could not be more excited with my new explorer. Thank you AutoNation Ford Littleton!

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.

I recently purchased a car at McDonald Hyundai and worked with Sam Soliman. He was both very professional and friendly. He communicated clearly and was efficient in finding a unique financing option that would meet my needs. He was very honest and was able to eliminate much of the anxiety that goes with purchasing a vehicle. I would work with him specifically again for any future vehicle purchases. He made a challenging process move with ease and comfort. Regards, Cecilia Merritts

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.

Have only dealt with Rayce. He is incredibly attentive to detail (even those I forget). Found his honesty and knowledge to have been so very helpful in my purchase choice. Will continue to return

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

Had a great experience trading in my 4runner and getting a new tundra with Chris Williams yesterday! Couldn’t have made the process easier from start to finish and appreciate them staying late for us.

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. ??????????????????????????????????????????? ?????????????

I am so grateful to have found Schomp! My car was totaled recently and, being a young woman who knows nothing about cars, I was BEYOND overwhelmed at the idea of buying another. I visited a few other dealerships, but I didn't like how "cornered" the sales teams made me feel. Schomp is SO different. I had the pleasure of working with Jacob at Schomp Honda in Highlands Ranch, and he was incredibly patient and kind while assisting me through the entire process, which meant SO MUCH considering how overwhelmed I was. I never once felt like he was trying to pressure me toward any particular vehicle or that I was being swindled to pay more, because that's not how Schomp works. It was clear to me that Jacob (as well as the rest of the team) wanted me to feel comfortable in a car I really liked, and he literally went out of his way to help me find it. Thank you so much, Jacob! Shout-out to Hayes, David Cole, and James as well. The people here are genuine, honest, and trustworthy which were major factors for me in letting them help me find my new car. This place greatly exceeded my expectations. The vibes are immaculate. Love you guys.

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

Outstanding customer service / warranty service / repair service. Steve, Kevin, and the technicians came through again with a warranty repair in record time. I am very glad I bought an extended warranty to match my lease term, but it would be nothing without the service team here at AutoNation Jeep in Golden. A steering part failed on I25, and we experienced significant ?death wobble? (IYKYK). Steve responded to my text immediately and I went in two days later (my schedule). The whole repair was done in less than 3 hours, and I was on my way. The service department here continues to earn my loyalty each and every time I come in. They are fast, friendly, professional, and demonstrate a genuine concern for me and my Wrangler. Good customer service and good vehicle repair service are hard to find. Both are top tier at this location. Again, it is worth the half-hour drive from our house and more. Thank you from a very satisfied customer!

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.

Tony Rocha is one of the finest and diligent salespersons I have ever worked with. He responded to my Cars.com evening inquiry the very next morning before the dealership was open. Still waiting on other dealerships to respond from a week ago. I purchased a new Z4 M40i and Tony stayed with the transaction until the car was loaded on a carrier. If you go to Schomp BMW be sure to ask for Tony!

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

Overall customer relationship skills were excellent. I Bought a used car that was not ready to go when I flew in to pick it up because of a poor inspection. They worked hard get it right. But, it took awhile.

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

Our salesman Eissa Hizhley, was a pleasure working with, he got us exactly what we wanted. Finance Deptment was easy to work with. We will go back again.

Jillian was very responsive and worked hard to be fair and do her job well. Jillian is great! Our only annoyance was the long wait to pick up the car , which is minor in the scheme of things. Thank you Schomp & Jillian.

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.

Typically don't write reviews, but buying from here was a relief compared to the other dealerships I went to on the same day. I didn't go through a telecom service, the salesman Lisandio contacted me directly, and gave me any information he could when I asksed. When we were done and I said I'd like to look at other offers, he said cool, let me know if your still interested. I went to Echo Park next. They tried to pressure me into buying, could barely tell me anything about the vehicle, the vehicle was in bad shape, and all service was automated in a bad way where you get left wondering if anything is happening. So I went back to Schomp, Lisandio had got me financing despite the car being older than 10 years, he walked me through everything. Schomp also did more service work on the vehicle too, new brakes and tires.

I've owned this GMC Sierra 1500 All Terrain since it was 8 months old. With the exception of two warranty issues (failing power brake vacuum pump and transmission electrical harness), I have been totally happy with this truck. Up until now, my 1996 Chevrolet K1500 Silverado with it's 5.7L Vortec engine was my favorite truck of all time, this GMC (5.3L LS engine, 8 speed automatice) has earned the top spot now of my all time favorite truck. It is comfortable to drive, and runs as good as the day I bought it over 5+ years ago. I've got 71.5K miles on it. My biggest issue is I wished it had the 6.2L engine for better towing capabilities. Other than that ... love this truck.

Carlos at Super Auto was professional, patient, and easy to work with. He addressed my concerns and showed me several cars without being pushy. I appreciated his approach.

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!

?????????? I had a great car-buying experience at Mike Maroone GMC in Boulder. From start to finish, the team went above and beyond. A special thank you to Austin, the new car sales manager, Brayden, Cosmin, and Alec. Their customer service was outstanding, and what really stood out was their follow-through. Anytime I had multiple questions, they took the time to explain things in a way that I could clearly understand?never rushed, never brushed off. This wasn?t just about buying a vehicle?it was about feeling taken care of. The level of professionalism, patience, and genuine care made this the smoothest and most enjoyable car-buying experience I?ve ever had. I highly recommend Austin, Brayden, Alec and Cosmin, and the entire team at Mike Maroone GMC Boulder!

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.

The dealership responded quickly and were knowledgeable about the vehicle I was interested in. They also maintained contact even though I didn’t purchase that particular car.

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...