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  *Estimated payments are calculated by Cars.com and are for informational purposes only. We’ve estimated your taxes based on your provided ZIP code. These estimates do not include title, registration fees, lien fees, or any other fees that may be imposed by a governmental agency in connection with the sale and financing of the vehicle. Other taxes may apply. They do not represent a financing offer or a guarantee of credit from the seller. Actual terms vary by lender.
  
  
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  Used
  2018 GMC Sierra 1500 trucks
  for sale
  
  
    near
Denver, CO 
    
  
      - Down Payment
- $0
- Net trade-in value
- $0
- Months
- 72
- APR
- 7.0%
- Sales tax
- 0.0%
    
  *Estimated payments are calculated by Cars.com and are for informational purposes only. We’ve estimated your taxes based on your provided ZIP code. These estimates do not include title, registration fees, lien fees, or any other fees that may be imposed by a governmental agency in connection with the sale and financing of the vehicle. Other taxes may apply. They do not represent a financing offer or a guarantee of credit from the seller. Actual terms vary by lender.
  
  
  **Your Saved Vehicles list will be shared along with your contact information when you submit a vehicle request to a dealership. To opt out of this sharing, please view your options on Cars.com Privacy Notice.
  
 
            
        
       
          
        
       
          
        
       
          
        
       
          
        
       
            Used
2018 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
Overall customer relationship skills were excellent.
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.
2018 crew cab gmc Sierra 1500
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.
 
          
        
       
          
        
       
          
        
       
          
        
       
          
        
       
            Used
2018 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
I was very satisfied with the service that I received
I was very satisfied with the service that I received from Auto Nation Chrysler Jeep on Arapahoe, and my service advisor Thomas Hatch. Mr. Hatch is very professional, and I enjoyed working with him.
new owner of the gmc denali, 2018 6.2
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
 
          
        
       
          
        
       
          
        
       
          
        
       
          
        
       
            Used
2018 GMC Sierra 1500 SLT
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Reviews
Roman T.
Roman T. was great help. I could not ask for Patient, kind attentive and a calm demeanor. I did not feel pressured into anything. I couldn't have asked for a better sales rep.
best in class
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.
 
          
        
       
          
        
       
          
        
       
          
        
       
          
        
       
            Used
2018 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
The customer service here exceeds the ?
The customer service here exceeds the ?Call of duty!? The patients that my sales representative Jermey had is to be compared to a saint. When it seemed extremely unlikely that I would be able to get a feasible finance quote due to high lender suggestions and strange credit inquiry results. In the midst of me throwing in towel my sales representative reassured me that he would not give up on me. He told that he would collaborate with management and the finance person to get me the car. They somehow reduced my down payment six thousand dollars by the next day, and gave me a warranty that covers almost anything. They even went as far as reserving the vehicle for when others came in to buy it. The unfortunately had an unforeseen issue that was not covered by the warranty. I sent a text to Jermey, my sales representative and the manager paid for the repair out of pocket. A lot of people are afraid to buy vehicles from car lots because of shady customer service, and they hate payments. But there is a lot of security at this store. I went to three dealers before this one and one sold the car I wanted while I was actively buying it, and the other two, I wasn?t happy with the car! ?This is where we need to be at!?
Better than my old truck
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
 
          
        
       
          
        
       
          
        
       
          
        
       
          
        
       
            Used
2018 GMC Sierra 1500 Denali
Vehicle information
Features
Reviews
My salesman was Michael Meis at John Elway Cadillac, they
My salesman was Michael Meis at John Elway Cadillac, they treated me well. I purchased a used Tesla, they were the ONLY dealer that knew how to apply the IRS rebate up front. No hidden fees or scammy stuff. Michael Meis was great in sales as was Jonathan (manager) and the rest of the team, wonderful dealership experience which is rare these days.
This is an attractive and enjoyable 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.
 
          
        
       
          
        
       
          
        
       
          
        
       
          
        
       
            Used
2018 GMC Sierra 1500 SLT
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Best ford 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!
 
          
        
       
          
        
       
          
        
       
          
        
       
          
        
       
            Used
2018 GMC Sierra 1500 SLE
Vehicle information
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Reviews
We had a fantastic experience at AutoNation Subaru
We had a fantastic experience at AutoNation Subaru Arapahoe. We were just starting our car search when we decided to stop at Subaru out of curiosity. Even though we had never owned a Subaru before, Bryan helped us figure out that the Forester was the perfect choice for us. We drove away with our 2025 Forester that day and haven't regretted it! We experienced excellent service by Bryan and Zachary (LoveSubaru).
 
          
        
       
          
        
       
          
        
       
          
        
       
          
        
       
            Used
2018 GMC Sierra 1500 Denali
Vehicle information
Features
Reviews
Quick and easy the staff was amazing and lots of car to
Quick and easy the staff was amazing and lots of car to select from would recommend
 
          
        
       
          
        
       
          
        
       
          
        
       
          
        
       
            Used
2018 GMC Sierra 1500 SLT
Vehicle information
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Reviews
Yamile was knowledgeable, professional, empathetic and a
Yamile was knowledgeable, professional, empathetic and a terrific asset for you. She is a keeper!!! I could not be more pleased with the service she provided.
 
          
        
       
          
        
       
          
        
       
          
        
       
          
        
       
            Used
2018 GMC Sierra 1500 SLE
Vehicle information
Features
Reviews
My family have been customers of Berkenkotter Motors for
My family have been customers of Berkenkotter Motors for the past 7 years. From the very first car leased through them we knew we found a special dealership. Dan specifically, the owner, worked diligently with us the past few weeks to help us get into an affordable vehicle when we found ourselves without one. They are quick, kind, efficient and honest with fair pricing for excellent vehicles. If you are looking for a dealership that you'll want to go back to over and over again, then look no further than here.
 
          
        
       
          
        
       
          
        
       
          
        
       
          
        
       
            Used
2018 GMC Sierra 1500 SLT
Vehicle information
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            Used
2018 GMC Sierra 1500 SLE
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            Used
2018 GMC Sierra 1500 SLT
Vehicle information
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Great family owned dealership No tricks just good
Great family owned dealership No tricks just good vehicles Nice dogs too Would buy from them again
 
          
        
       
          
        
       
          
        
       
          
        
       
          
        
       
            Used
2018 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
Lewis was good I love our cars thank you much for the
Lewis was good I love our cars thank you much for the service I appreciate it
 
          
        
       
          
        
       
          
        
       
          
        
       
          
        
       
            Used
2018 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
I live in another state and this was my first experience
I live in another state and this was my first experience buying a car without driving it first. Very pleased with my car. Thank you Ryan for all your help in making this happen. Service was amazing.
 
          
        
       
          
        
       
          
        
       
          
        
       
          
        
       
            Used
2018 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
I have always wanted a Rubicon but felt I could never
I have always wanted a Rubicon but felt I could never afford it. Ive always counted on and trust Ayden. He is amazing. He was able to help me realize that i could have one and he helped me make my dream com true. i have purchase 4 previous vehicles from Auto Nation and from Ayden. He's always been there for me in every case. I so appreciate him. He's honest and so very helpful. I can't thank him enough for answerinng questions and making my dream come true. Thankls Ayden , Love you man.
 
          
        
       
          
        
       
          
        
       
          
        
       
          
        
       
            Used
2018 GMC Sierra 1500 Denali
Vehicle information
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Reviews
Buy great deal
Great I have to do this again good staff George sourial was great handling my purchase. Would recommend every one to going and get a quality vehicle.
 
          
        
       
          
        
       
          
        
       
          
        
       
          
        
       
            Used
2018 GMC Sierra 1500 Denali
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Just a update regarding my last rating and review, after
Just a update regarding my last rating and review, after a meeting with the owner Ali Awada. He took care of me and paid for my car repair and gave me 100.00 for my family and I to have dinner. Thanks Colorado Auto Finders for doing your best to make things right for with me.
 
          
        
       
          
        
       
          
        
       
          
        
       
          
        
       
            Used
2018 GMC Sierra 1500 Denali
Vehicle information
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Rafeal was my contact there and he was great.
Rafeal was my contact there and he was great. He went above and beyond to communicate share photos and video and was very transparent. As a matter of fact the whole process and everyone was easy to work with. Not the dealer where sale and sale manager go back and forth to do some crazy negotiating. Open transparent and fair dealing. Rafeal was an advocate throughout and in and out with anew car well less than an hr after trade in paperwork
 
          
        
       
          
        
       
          
        
       
          
        
       
          
        
       
            Used
2018 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
Fantastic dealership
My experience was great from the time I walked in the door, Luke, Mike, and Kelley were fantastic from showing me what they had in my price range to helping me get approved and out the door with a vehicle. Will recommend them to friends and family 100%
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GMC Sierra 1500 prices by year
| Model year | Average price | Deals | 
|---|---|---|
| 2026 GMC Sierra 1500 | $69,469 | |
| 2025 GMC Sierra 1500 | $61,151 | 2 Good deals | 
| 2024 GMC Sierra 1500 | $55,652 | 9 Great deals | 
| 2023 GMC Sierra 1500 | $49,234 | 11 Great deals | 
| 2022 GMC Sierra 1500 | $41,840 | 21 Good deals | 
| 2021 GMC Sierra 1500 | $37,131 | 5 Great deals | 
| 2020 GMC Sierra 1500 | $36,966 | 9 Good deals | 
| 2019 GMC Sierra 1500 | $34,861 | 7 Good deals | 
| 2017 GMC Sierra 1500 | $27,503 | 5 Good deals | 
About the 2018 GMC Sierra 1500
Base shown (base trim).
- Seating
- 3
- Door count
- 2
- Drivetrain
- Rear-wheel drive
- Combined MPG
- 20
- Transmission
- 6-Speed A/T
- Engine
- 285.0-hp, 4.3-liter, V6 Cylinder Engine (Flex Fuel Capability)
 
          How much does the 2018 GMC Sierra 1500 cost?
The 2018 GMC Sierra 1500 price depends on several factors, including the trim level, optional features, mileage, vehicle history and location. The nationwide average price for a 2018 Sierra 1500 is $28,045, with pricing starting at $11,595.
What is the MPG of the 2018 GMC Sierra 1500?
The 2018 GMC Sierra 1500 offers up to 18 MPG in city driving and 24 MPG on the highway for a combined rating of 20 MPG.
These figures are based on EPA mileage ratings and are for comparison purposes only. The actual mileage will vary depending on the selected vehicle trim, driving conditions, driving habits, vehicle maintenance, and other factors.
What are some similar vehicles and competitors of the 2018 GMC Sierra 1500?
The 2018 GMC Sierra 1500 compares to and/or competes against the following vehicles:
Is the 2018 GMC Sierra 1500 reliable?
The 2018 GMC Sierra 1500 has an average reliability rating of 4.7 out of 5 according to Cars.com consumers. Find real-world reliability insights within consumer reviews from 2018 Sierra 1500 owners.
Is the 2018 GMC Sierra 1500 a good truck?
Below are the Cars.com consumer ratings for the 2018 GMC Sierra 1500.
- Comfort 4.9
- Interior 4.8
- Performance 4.7
- Value 4.6
- Exterior 4.8
- Reliability 4.7
93% of drivers recommend this car
- Comfort 4.9
- Interior 4.8
- Performance 4.7
- Value 4.6
- Exterior 4.8
- Reliability 4.7
Base (10 styles)
| Style | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| 2WD Crew Cab 143.5" | 4WD Crew Cab 143.5" | 4WD Double Cab 143.5" | 2WD Double Cab 143.5" | 4WD Crew Cab 153.0" | 2WD Crew Cab 153.0" | 4WD Reg Cab 119.0" | 2WD Reg Cab 119.0" | 2WD Reg Cab 133.0" | 4WD Reg Cab 133.0" | 
| Inventory price | |||||||||
| Starting at $35,500 | Starting at $38,700 | Starting at $37,000 | Starting at $33,000 | Starting at $40,100 | Starting at $36,900 | Starting at $32,900 | Starting at $29,000 | Starting at $29,300 | Starting at $33,200 | 
| Combined MPG | |||||||||
| 20 | 19 | 19 | 20 | 18 | 19 | 19 | 20 | 20 | 19 | 
| Engine | |||||||||
| 285.0-hp, 4.3-liter, V6 Cylinder Engine (Flex Fuel Capability) | 285.0-hp, 4.3-liter, V6 Cylinder Engine (Flex Fuel Capability) | 285.0-hp, 4.3-liter, V6 Cylinder Engine (Flex Fuel Capability) | 285.0-hp, 4.3-liter, V6 Cylinder Engine (Flex Fuel Capability) | 355.0-hp, 5.3-liter, 8 Cylinder Engine (Gasoline Fuel) | 355.0-hp, 5.3-liter, 8 Cylinder Engine (Gasoline Fuel) | 285.0-hp, 4.3-liter, V6 Cylinder Engine (Flex Fuel Capability) | 285.0-hp, 4.3-liter, V6 Cylinder Engine (Flex Fuel Capability) | 285.0-hp, 4.3-liter, V6 Cylinder Engine (Flex Fuel Capability) | 285.0-hp, 4.3-liter, V6 Cylinder Engine (Flex Fuel Capability) | 
Denali (3 styles)
| Style | ||
|---|---|---|
| 4WD Crew Cab 153.0" Denali | 2WD Crew Cab 143.5" Denali | 4WD Crew Cab 143.5" Denali | 
| Inventory price | ||
| Starting at $56,300 | Starting at $52,900 | Starting at $56,000 | 
| Combined MPG | ||
| 17 | 18 | 17 | 
| Engine | ||
| 420.0-hp, 6.2-liter, 8 Cylinder Engine (Gasoline Fuel) | 420.0-hp, 6.2-liter, 8 Cylinder Engine (Gasoline Fuel) | 420.0-hp, 6.2-liter, 8 Cylinder Engine (Gasoline Fuel) | 
SLE (10 styles)
| Style | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| 2WD Reg Cab 119.0" SLE | 4WD Reg Cab 133.0" SLE | 4WD Reg Cab 119.0" SLE | 2WD Reg Cab 133.0" SLE | 4WD Double Cab 143.5" SLE | 2WD Double Cab 143.5" SLE | 4WD Crew Cab 153.0" SLE | 2WD Crew Cab 153.0" SLE | 2WD Crew Cab 143.5" SLE | 4WD Crew Cab 143.5" SLE | 
| Inventory price | |||||||||
| Starting at $35,700 | Starting at $39,900 | Starting at $39,600 | Starting at $35,800 | Starting at $42,100 | Starting at $38,300 | Starting at $46,100 | Starting at $42,100 | Starting at $40,700 | Starting at $44,700 | 
| Combined MPG | |||||||||
| 20 | 19 | 19 | 20 | 19 | 20 | 18 | 19 | 20 | 19 | 
| Engine | |||||||||
| 285.0-hp, 4.3-liter, V6 Cylinder Engine (Flex Fuel Capability) | 285.0-hp, 4.3-liter, V6 Cylinder Engine (Flex Fuel Capability) | 285.0-hp, 4.3-liter, V6 Cylinder Engine (Flex Fuel Capability) | 285.0-hp, 4.3-liter, V6 Cylinder Engine (Flex Fuel Capability) | 285.0-hp, 4.3-liter, V6 Cylinder Engine (Flex Fuel Capability) | 285.0-hp, 4.3-liter, V6 Cylinder Engine (Flex Fuel Capability) | 355.0-hp, 5.3-liter, 8 Cylinder Engine (Gasoline Fuel) | 355.0-hp, 5.3-liter, 8 Cylinder Engine (Gasoline Fuel) | 285.0-hp, 4.3-liter, V6 Cylinder Engine (Flex Fuel Capability) | 285.0-hp, 4.3-liter, V6 Cylinder Engine (Flex Fuel Capability) | 
SLT (5 styles)
| Style | ||||
|---|---|---|---|---|
| 2WD Double Cab 143.5" SLT | 4WD Crew Cab 143.5" SLT | 2WD Crew Cab 143.5" SLT | 4WD Double Cab 143.5" SLT | 4WD Crew Cab 153.0" SLT | 
| Inventory price | ||||
| Starting at $42,800 | Starting at $48,400 | Starting at $45,200 | Starting at $46,000 | Starting at $48,700 | 
| Combined MPG | ||||
| 19 | 17 | 18 | 18 | 17 | 
| Engine | ||||
| 420.0-hp, 6.2-liter, 8 Cylinder Engine (Gasoline Fuel) | 420.0-hp, 6.2-liter, 8 Cylinder Engine (Gasoline Fuel) | 420.0-hp, 6.2-liter, 8 Cylinder Engine (Gasoline Fuel) | 420.0-hp, 6.2-liter, 8 Cylinder Engine (Gasoline Fuel) | 420.0-hp, 6.2-liter, 8 Cylinder Engine (Gasoline Fuel) | 
    
  *Estimated payments are calculated by Cars.com and are for informational purposes only. We’ve estimated your taxes based on your provided ZIP code. These estimates do not include title, registration fees, lien fees, or any other fees that may be imposed by a governmental agency in connection with the sale and financing of the vehicle. Other taxes may apply. They do not represent a financing offer or a guarantee of credit from the seller. Actual terms vary by lender.
  
  
  **Your Saved Vehicles list will be shared along with your contact information when you submit a vehicle request to a dealership. To opt out of this sharing, please view your options on Cars.com Privacy Notice.
  
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Compare the 2018 GMC Sierra 1500
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2018 GMC Sierra 1500 by body style
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This vehicle is certified pre-owned, backed by a manufacturer warranty, and typically undergoes a rigorous multi-point inspection to ensure quality and reliability.
This vehicle is currently in high demand given its competitive price, desirable features, and overall condition, and may have a higher chance of selling quickly.
