Used GMC Sierra 1500 SLT for sale near Mountain View, CO

We just purchased a car at Mountain States Toyota and are extremely impressed with transparent, straightforward experience. They have an extensive inventory and the salesperson, Hunter, is an asset to the dealership. Hunter's customer service was the main reason we bought a car here. His knowledge is amazing and either he answered our questions or researched them and followed up. Just a great experience!

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

Good costumer service and very helpful it was what we expected plus they have nice cars

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!

Our salesman, Ed was great. Patient, funny and knowledgeable. Only showed us the cars we were interested in . We would definitely work with him again.

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.

Pleasant and friendly We were treated with respect and kindness Would buy another car from this dealership and sales Person. Our last three cars were purchased from this dealership and we will happily do that again next time

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.

Had a great experience buying my Jeep. Would definitely come back to purchase from them again.

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

I bought my car from out of state but came here to get it serviced. I experienced Great service that was done well. Communication was great as well

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!

Very good experience with O’meara VW buying a nice used Jetta. Quick fast deal without the usual back and forth time consuming runaround. Friendly courtesy call a couple days after to check on us. Thanks Karson, Elva and sales manager Steve. 👍👍

Let me start by saying I have the AT4 model with the Duramax 3.0L diesel. I had a 2024 Elevation with the 5.3L V-8 that I bought to pull my 22’ camper. While the Elevation pulled my camper fine it drank the gas like it was on a binge. And with a 26 gallon gas tank it seemed I was filling up every couple of hours. After one trip to Nova Scotia I knew something had to change. I pulled my camper out west to Yellowstone and back through Arizona. It pulled like a champ and fillups were a lot more manageable. Even driving the speed limit out west I still got four to five mpg better than with the gasser. I liked the Elevation but I love the AT4. Way nicer ride and great handling. I get 30 per gallon of diesel on the highway if I drive the speed limit but I got it to tow with. I added a Titian replacement fuel tank so I have 43 gallons instead of the 26 it came with.

Jon A was a gem to work with. He bent over backwards to find deal/price that suited me. He drove my car home that evening, so I didn’t have to find someone who could meet me at the lot later in the week. He researched and finally bought a charging cord for my new, leased EV (didn’t COME with a cord!! What’s up with that, Kia??). Couldn’t have been nicer and more helpful.

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.

Jesus Hernandez was amazing and helped with us get into a vehicle same day woo!

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.

Saw a preview of a Porsche Macan GTS they listed but they did not have photos posted so I inquired. David emailed me immediately, and told me it was incoming and would send pix as soon as it arrived. A day or 2 later I got several high quality photos of it inside and out and a follow up phone call making sure I received them, and if there was anything else I wanted photos of or had any questions. Vehicle was beautiful and professionally detailed, but unfortunately when we went over the option list it was missing a few "must-haves" for me. When I told him that I wasn't interested only because it didn't have those options, he asked if I would like him to keep my info and let me know if he finds the exact one I'm looking for, which I really appreciated! Other dealers with similar vehicles I inquired about took days to reply and immediately lost interest in making a sale as soon as we determined their vehicle was missing those must-have options. At that point, they were only interested in making the sale on THAT car TODAY, not a potential future sale. David understood that not all deals happen immediately, and I'm a serious buyer just waiting for the perfect optioned car, so I'm really hoping he is able to find me the exact spec GTS I'm searching for. I know it's out there and with the excellent sales experience so far, I feel comfortable buying a car from them.

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.

Isiah, Arie, and the rest of the team did a great job making our car buying/trade-in experience go as smoothly and quickly as possible. They even made sure our car was detailed and had a full tank of gas before we left the lot! Great communication from start to finish.

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.

The salesman was very helpful and went out of the way to help me on this deal. I greatly appreciate his help. I would buy another vehicle from this location and not hesitate to recommend people their way. Again I thank Luis and the people at this location. Keep up the good work!

I really like my nw, to me, 2015 GMC Sierra Denali. The salesman, Terrance Lin was very efficient, helpful and courteous. Thank you very much.

Great experience Diana helped me out a lot had an easy first time buyer experience drove of with what I wanted thank you Diana and Ethio Motors.

The truck has more features than I need. It is quiet and comfortable. it has plenty of power to pull a work trailer. Overall a nice truck

Megi has helped us into three vehicles over the past year, and every experience has been efficient, seamless, and genuinely enjoyable. She’s not only incredibly knowledgeable and responsive but also an absolute pleasure to work with. Megi goes above and beyond to make the process smooth from start to finish. We highly recommend her as both a person and a trusted partner when you’re looking for your next vehicle!

I traded my Chevrolet Silverado for this GM Certified GMC Sierra 1500. It is an attractive and enjoyable vehicle. Some years ago I had a GMC and really prefer them over a Chevrolet. This vehicle is just what I need for hauling and general driving.

Our two Mazdas were total losses due to the Hailstorm that struck Cheyenne WY on August 1, 2025. I found AutoSearch USA through cars.com and contacted them about a Mazda CX-5 the had listed. Mike Blunn was great! They had just listed the car the previous Friday, and still needed top get some prep work done, but we set up a date to see it the following Tuesday. The car was not quite ready for us to take that day, so we made arrangements to meet at an Enterprise location midway between Cheyenne WY and AutoSeach USA's location so we could finalize the sale and turn in our rental. Everything went off without a hitch. I highly recommended AutoSearch USA for anyone looking for quality car buying experience.

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 !

I had an exceptional experience working with Kristian Fernanda in the purchase of my GX550 Overtrail Plus. He was incredibly knowledgeable and honest, offering detailed insights without any pressure. He made the entire process smooth and enjoyable, answering all my questions with clarity and ensuring I was comfortable every step of the way. I truly appreciated the low-pressure approach and felt like I was making an informed decision. Financing decisions were easy working with Raymond Rodriguez and I enjoyed our discussions while waiting for the banks to respond back with rates. I really appreciated Alan Ruiz going over all of the tech with me. This is my fourth Lexus and by far the best purchase experience. Thank you!

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

Very nice easy to get financed very helpful did not have to wait in and out it was I recommend 👍auto warehouse to my friends and family very good

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!!

These guys are the best. They made the buying process very easy. Thanks for everything Gilberto Rivera and the owner Julio!!!

I have had my 2011 GMC Sierra for a few years now, i love it. i have hauled multiple loads of wood with the truck loaded too the max and a small trailer loaded to the max. can definitely feel the weight but my truck never hesitates at all. Very impressed with the performance of these trucks. i have worked at a ford dealership for years, but ill always drive a GMC.

Easy to work with, set everything up in a timely manner. Mathew did great explaining all my options. When it went to finance Juan was very knowledgeable and straightforward. Also a bonus is most of the documents are digital now.

Waiting for the Refreshed 2022 AT4 was well worth it! With all the manufacturing issues today, building and shipping was slow, but understandable. Love the truck and the features! Fit is perfect and quality is #1. Pricing was too high but all vehicles are running this way. You get what you pay for and this truck is perfect! I have owned many trucks and this by far is the best. The latest features are beyond most other makes and GM has thought this truck through from front to rear.