Save your search and get notified when new inventory arrives.
Contact seller
Customize your budget
*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.
About your privacy: Cars.com is asking for your ZIP and credit rating because it helps us to make an educated guess at your sales tax and loan interest. These two factors can greatly change your monthly payment.
Used
2018 GMC Sierra 3500 Denali trucks
for sale
near me
- 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 3500 Denali
Vehicle information
Features
Reviews
On 6 February had my Dodge Journey iln for a problem.
On 6 February had my Dodge Journey iln for a problem. Problem was detected repidly and the service advisor, Manuel Soto, did a excellent job. Thought I would be in there for hours as a condensor was going out. Lessl than a hour later the condensor was replaced &I was on my way. Thank You Very Much. James Savidge
An overall nice truck but for a person at my size(5,11)
An overall nice truck but for a person at my size(5,11) the mirrors and posts really block the view. My tinted windows really amplify the problem. The hood also takes a bit of room for a short person. Its a comfortable ride and works well in my line of work in excavation. The sound muffler in the hood makes you think something is wrong but apparently its not.






Used
2018 GMC Sierra 3500 Denali
Vehicle information
Features
Reviews
I bought a used car from them.
I bought a used car from them. When I was driving it home, something popped in the engine. Car started running bad. When got home I called them and they sent a wrecker to pick it up. They keep it till its was fixed. I wish I could give them 150% for being the best dealership I've ever been too. Thank you
I have had to of these before and I drive the xxxx
Just what I was looking for and the price was right. The color was the same as the truck I traded in. We have purchased a bumper pull camper and now mountain passes will feel like flat roads!!






Used
2018 GMC Sierra 3500 Denali
Vehicle information
Features
Reviews
Just bought a 2023 Traverse.
Just bought a 2023 Traverse. Worked it through Jack Shelton. He did a great job helping us through the process.
Big Step Up
This is my first HEAVY DUTY truck and my first diesel. I have only had it a week and 3 days but it has already been on the job and been driven 1500 miles. I expected a much rougher ride than the Chevrolet 1/2 ton it replaced but must say I am pleasantly surprised. I compared ride quality to it's main HD competitors and this GMC 3500HD surpasses them. It has far more tech features than should be expected in a base model but I can appreciate the convenience especially for business. I love that it will project driving maps and directions from my iPhone onto its larger screen. I have not yet towed or seriously taxed its payload but the Duramax diesel is something to behold. Averaging 17.9 mpg over 1500 miles. The DEF fill could be a bit more convenient but putting it under the hood does keep DEF away from fuel filling and is not required often enough to be an issue.






Used
2018 GMC Sierra 3500 Denali
Vehicle information
Features
Reviews
Great customer service!
Great customer service in the service department, technicians did a thorough job, and were able to diagnose and repair my car at the same appointment. Thank you to everyone!
Unbelievable towing capacity.
The Denali version is absolutely what we was looking for. Towing capacity is awesome. Has plenty of room in back for kids or cargo. Would recommend this vehicle for anyone who tows trailers. Duramax is what they say it is with Allison transmission best vehicle on the market.


Used
2018 GMC Sierra 3500 Denali
Vehicle information
Features
Reviews
Capable truck with the right options
Drove well and plenty of power, the SLT is perfect for us with the 40-20-40 front seat and without the extras that we don't need that are on the Denali.






Used
2018 GMC Sierra 3500 Denali
Vehicle information
Features
Reviews
Had a great experience purchasing my BMW.
Had a great experience purchasing my BMW. Super friendly staff. They answered all my questions. Will definitely recommend.






Used
2018 GMC Sierra 3500 Denali
Vehicle information
Features
Reviews
We have been very happy with Corwin for always taking
We have been very happy with Corwin for always taking care of our 2020 Denali promptly and efficiently. The staff in sales and service have been amazing.






Used
2018 GMC Sierra 3500 Denali
Vehicle information
Features
Reviews
minhphm9@yahoo.com
Good job, Great service, thank you. I will alway bring my car here






Used
2018 GMC Sierra 3500 Denali
Vehicle information
Features
Reviews
I had the very best experience working with Hailey
I had the very best experience working with Hailey Jane’s😀. She was awesome!!! You should go see her






Used
2018 GMC Sierra 3500 Denali
Vehicle information
Features
Reviews
Jared
Everything went very smoothly. The sales staff and financial staff were easy to work with. I left feeling I got a good deal.






Used
2018 GMC Sierra 3500 Denali
Vehicle information
Features
Reviews
Gmc Canyon
Awesome!!! Great job and great people! Aaron put the ball hitch on for me and my plates!






Used
2018 GMC Sierra 3500 Denali
Vehicle information
Features
Reviews
Tyler Harvey who is now working in finance at this
Tyler Harvey who is now working in finance at this dealership did a wonderful job for us at his previous dealership. He was able to get us a great deal with affordable finances. He is personable and truly cares about his customers. We would highly recommend Tyler for your automobile needs. Paul and Sandy Amann






Used
2018 GMC Sierra 3500 Denali
Vehicle information
Features
Reviews
We just purchased a 2024 GMC.
We just purchased a 2024 GMC. Bob Corey and Nick Pridham were amazing in helping us through the buying process. Bob was an amazing sales man.i Dont like the pressure most car dealers put on the customer but we felt none of that with Bob. Thank you so much for making our truck buying wonderful.






Used
2018 GMC Sierra 3500 Denali
Vehicle information
Features
Reviews
Very nice and professional great customer service and got
Very nice and professional great customer service and got an honest offer on our trade. I will definitely be back for our next vehicle purchase. Thank you!






Used
2018 GMC Sierra 3500 Denali
Vehicle information
Features
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 3500 Denali
Vehicle information
Features
Reviews
Worked with Ms.
Worked with Ms. Marisela and she was awesome. No hassle, very upfront and was a please to work with. Definitely recommend coming to check out their inventory and ask for her by name. Marisela Shema!






Used
2018 GMC Sierra 3500 Denali
Vehicle information
Features
Reviews
My experience at Lemans was nothing but amazing.
My experience at Lemans was nothing but amazing. Never felt pressured to purchase a vehicle, they made me feel comfortable and they’re well respectable. Diego was excellent especially. Highly recommended dealership to go to






Used
2018 GMC Sierra 3500 Denali
Vehicle information
Features
Reviews
Gig Harbor FD
The Team troubleshoot our unit quickly and correct. very courteous and helpful. a pleasure to work with and excited for future business




Used
2018 GMC Sierra 3500 Denali
Vehicle information
Features
Reviews
Rudy was Great got me the truck of my dreams.
Rudy was Great got me the truck of my dreams. Go see my dude Rudy






Used
2018 GMC Sierra 3500 Denali
Vehicle information
Features
-
Prev - 1
- 2
-
Next
GMC Sierra 3500 prices by year
Model year | Prices from | Deals |
---|---|---|
2025 GMC Sierra 3500 Denali | $73,998 | 6 Great deals |
2024 GMC Sierra 3500 Denali | $59,111 | 132 Good deals |
2023 GMC Sierra 3500 Denali | $49,897 | 9 Great deals |
2022 GMC Sierra 3500 Denali | $285 | 11 Great deals |
2021 GMC Sierra 3500 Denali | $46,599 | 8 Great deals |
2020 GMC Sierra 3500 Denali | $37,995 | 27 Great deals |
2019 GMC Sierra 3500 Denali | $29,500 | 46 Good deals |
2017 GMC Sierra 3500 Denali | $28,900 | 9 Good deals |
2016 GMC Sierra 3500 Denali | $24,250 | 8 Good deals |
About the 2018 GMC Sierra 3500 Denali
Base shown (base trim).
- Seating
- 3
- Door count
- 2
- Drivetrain
- Rear-wheel drive
- Combined MPG
- 0
- Transmission
- 6-Speed A/T
- Engine
- 360.0-hp, 6.0-liter, 8 Cylinder Engine (Flex Fuel Capability)

How much does the 2018 GMC Sierra 3500 Denali cost?
The 2018 GMC Sierra 3500 Denali price depends on several factors, including optional features, mileage, vehicle history and location. The nationwide average price for a 2018 Sierra 3500 Denali is $47,224, with pricing starting at $32,995.
What are some similar vehicles and competitors of the 2018 GMC Sierra 3500 Denali?
The 2018 GMC Sierra 3500 Denali compares to and/or competes against the following vehicles:
Is the 2018 GMC Sierra 3500 Denali reliable?
The 2018 GMC Sierra 3500 has an average reliability rating of 4.1 out of 5 according to Cars.com consumers. Find real-world reliability insights within consumer reviews from 2018 Sierra 3500 owners.
Is the 2018 GMC Sierra 3500 Denali a good truck?
Below are the Cars.com consumer ratings for the 2018 GMC Sierra 3500.
- Comfort 4.6
- Interior 4.8
- Performance 4.4
- Value 3.8
- Exterior 4.9
- Reliability 4.1
87% of drivers recommend this car
- Comfort 4.6
- Interior 4.8
- Performance 4.4
- Value 3.8
- Exterior 4.9
- Reliability 4.1
*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.
GMC Sierra 3500 trims
-
GMC Sierra 3500 2018 Denali
1 Great Deal out of 30 listings starting at $32,995
-
GMC Sierra 3500 2018 SLT
1 Great Deal out of 23 listings starting at $30,995
- ${price_badge()}
- ${battery_badge()}${ev_report_link()}
- ${hot_car_badge()}
- ${award_badge()}
- ${cpo_badge()}
${price_badge_description}
The EV Battery Rating is based on this vehicle's current expected range relative to the vehicles expected range when new. ${battery_badge_text}
Certified cars are manufacturer warrantied and typically go through a rigorous multi-point inspection.
This car is likely to sell soon based on the price, features, and condition.
${award_blurb}
${award_two_blurb}