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 2500 SLT 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 2500 SLT
Vehicle information
Features
Reviews
Agustin was amazing super happy with his work definitely
Agustin was amazing super happy with his work definitely happy with his work will definitely come back
A Beast when it comes to hauling!
I love how the truck pulls and rides when towing. It will give any driver the confidence to tow anywhere. I haven't had a single issue with it. I love the way it looks and couldn't be happier.

Used
2018 GMC Sierra 2500 SLT
Vehicle information
Features
Reviews
Andrew was easy to work with making purchasing a car a
Andrew was easy to work with making purchasing a car a breeze! Definitely recommend him
Greatest truck ever
Just the truck I was dreaming. Auto world experience is great on product knowledge high recommend 2500 Hdz Denali truck you won’t regretted price product and drive experience






Used
2018 GMC Sierra 2500 SLT
Vehicle information
Features
Reviews
Zakk Danz amazing, was not push and allowed us to take
Zakk Danz amazing, was not push and allowed us to take our time finding and getting exactly what we wanted. Would work with him anytime.
Very comfortable to drive and relax in!
This truck was exactly what I was looking for! Great ride, and it will haul every thing that I need it to.! Low mileage without new car up front expense!






Used
2018 GMC Sierra 2500 SLT
Vehicle information
Features
Reviews
First vehicle ever purchased from Lee.
First vehicle ever purchased from Lee. Sales staff was fast and accommodating easy no haggling everything on time as promised good value for trade. Had inventory that no one else had highly recommend
Sharp looking vehicle
Sharp looking vehicle on the inside and out. Looking forward to the first snow fall to see how the vehicle performs on the snow covered roads.






Used
2018 GMC Sierra 2500 SLT
Vehicle information
Features
Reviews
Great experience, Nick was honest and helpful.
Great experience, Nick was honest and helpful. Highly recommend Lot 2 auto sales for your next used vehicle
In about 15 vehicle I had, this the best one
This truck just need nothing, comfort, strong, and beautiful, it's great for work, and for personal use, my next car will be the same but new






Used
2018 GMC Sierra 2500 SLT
Vehicle information
Features
Reviews
Jay was easy to work with and helped us find the right
Jay was easy to work with and helped us find the right car. Would recomend!






Used
2018 GMC Sierra 2500 SLT
Vehicle information
Features
Reviews
Getting an appointment was easy and times offered were
Getting an appointment was easy and times offered were convenient. My car was taken in promptly and finished when promised. My Advisor was efficient and friendly, with updates during the process and advising me when my car was ready to pick up. Very pleased, I will be back.






Used
2018 GMC Sierra 2500 SLT
Vehicle information
Features
Reviews
Best overall car shopping experience!
Best overall car shopping experience! Amazing customer service (the best we’ve ever had) prices, and hospitality! They made us feel like we were important and not just another sale/buyer! Didn’t hesitate for one second on something that we felt needed to be fixed on the car we were purchasing! Will definitely be using them for our future buys!






Used
2018 GMC Sierra 2500 SLT
Vehicle information
Features
Reviews
Hidden gem of a dealership
Had been looking for a newer truck for quite a while, but could never seem to catch up with the good deal on the truck I wanted, as someone else would buy it out from under me (three separate occasions). Finally, my better half spotted this one. It was JUST on the edge of my price range, and I hemmed and hawed about it for several days before I decided to pull the trigger. I could hardly pass it up, as it was an excellent truck in excellent shape, decent miles, and actually a very fair price, considering comparable trucks were going for more or MUCH more. I figured I'd better fish or cut bait or it would be gone again. Let me tell you, I am SO happy with this truck! Jeff was a fantastic salesman, extremely helpful, even going so far as to help me with this truck via his own personal phone. He was also 100% correct when he said I would waste way more time at the bank than I would at his dealership. When I got there, the truck was ready, papers were ready, EVERYTHING was ready. Maybe 15 minutes and I was on the road with my new truck that I'm extremely excited about. Thank you! Highly recommended business.






Used
2018 GMC Sierra 2500 SLT
Vehicle information
Features
Reviews
Great dealership and smooth easy experience!
Great dealership and smooth easy experience! Would go back here again to purchase another car.






Used
2018 GMC Sierra 2500 SLT
Vehicle information
Features
Reviews
Very nice, very helpful answered all my questions and
Very nice, very helpful answered all my questions and sold me a great truck best purchase experience ever!!






Used
2018 GMC Sierra 2500 SLT
Vehicle information
Features
Reviews
My experience was very good.
My experience was very good. Gavin was a good salesperson. However, I would NEVER EVER recommend a salesperson to tell ANY customer to put down $14,000 which was incredibly obscene for a down payment on a 3 year lease. You should NEVER be that hungry for a commission. My favorite salesperson that I knew for 35 years at West Herr East Aurora would never recommend that to me. That is the trust you build with your salesperson-customer relationship. If I had to do this all over again--I definitely would NOT. It was too late to back out of this deal. Basil is known for great deals, and this was definitely NOT a great deal no matter how you spin it. I was under much pressure myself to get a new car due to previous lease expiring, tariffs coming into the mix soon and my mom having cancer with only a few months to live. But, this scenario will never happen again, I will make sure of that.






Used
2018 GMC Sierra 2500 SLT
Vehicle information
Features
Reviews
These folks were fantastic!
These folks were fantastic! Highly recommend them. We had a great experience and love the car!!






Used
2018 GMC Sierra 2500 SLT
Vehicle information
Features
Reviews
great Service n o no no no no no no no no no no no no no
great Service n o no no no no no no no no no no no no no on on on on on on n o






Used
2018 GMC Sierra 2500 SLT
Vehicle information
Features
Reviews
New car buying made easy.
New car buying made easy. The entire deal was completed through email and over the phone. Jason Davis was friendly and helpful. He answered my questions in a timely manner and made the experience simple and hassle free. The vehicle price was straightforward with no haggling required. I felt like I received a very fair trade in on my truck.






Used
2018 GMC Sierra 2500 SLT
Vehicle information
Features
Reviews
LISA WAS AN ABSOLUTE PLEASURE TO DEAL WITH.
LISA WAS AN ABSOLUTE PLEASURE TO DEAL WITH. THE THUCK IS PERFECT. I HIGHLY RECOMMEND.



Used
2018 GMC Sierra 2500 SLT
Vehicle information
Features
Reviews
Bentley is the best!
Connor and Michael were the best! They made my purchase smooth and easy. Great to work with






Used
2018 GMC Sierra 2500 SLT
Vehicle information
Features
Reviews
Si lo que buscas está en “Pensacola Honda”, no dudes en
Si lo que buscas está en “Pensacola Honda”, no dudes en llegar y reunirte con Julianna para lograr lo que deseas. Hace una semana mi esposo y yo adquirimos un vehículo y estamos muy satisfechos: la negociación fue en idioma español, la atención al cliente genial. La vendedora todo el tiempo pensó en nuestras preferencias y posibilidades cuestión que valoramos mucho. Respecto al truck, perfectas condiciones y confort. Recomendado 100%






Used
2018 GMC Sierra 2500 SLT
Vehicle information
Features






Used
2018 GMC Sierra 2500 SLT
Vehicle information
Features
Reviews
I found a great deal on my 2024 Frontier at Tim Dahle.
I found a great deal on my 2024 Frontier at Tim Dahle. My salesman Bryker Durant was very easy to work with, and helped make the process simple.
-
Prev - 1
- 2
-
Next
GMC Sierra 2500 prices by year
Model year | Prices from | Deals |
---|---|---|
2025 GMC Sierra 2500 SLT | $58,390 | 13 Good deals |
2024 GMC Sierra 2500 SLT | $52,000 | 57 Good deals |
2023 GMC Sierra 2500 SLT | $44,900 | 6 Great deals |
2022 GMC Sierra 2500 SLT | $42,995 | 13 Great deals |
2021 GMC Sierra 2500 SLT | $42,251 | 16 Good deals |
2020 GMC Sierra 2500 SLT | $29,483 | 26 Good deals |
2019 GMC Sierra 2500 SLT | $31,495 | 19 Good deals |
2017 GMC Sierra 2500 SLT | $27,945 | 11 Good deals |
2016 GMC Sierra 2500 SLT | $19,900 | 6 Great deals |
About the 2018 GMC Sierra 2500 SLT
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 2500 SLT cost?
The 2018 GMC Sierra 2500 SLT price depends on several factors, including optional features, mileage, vehicle history and location. The nationwide average price for a 2018 Sierra 2500 SLT is $38,737, with pricing starting at $23,999.
What are some similar vehicles and competitors of the 2018 GMC Sierra 2500 SLT?
The 2018 GMC Sierra 2500 SLT compares to and/or competes against the following vehicles:
Is the 2018 GMC Sierra 2500 SLT reliable?
The 2018 GMC Sierra 2500 has an average reliability rating of 4.8 out of 5 according to Cars.com consumers. Find real-world reliability insights within consumer reviews from 2018 Sierra 2500 owners.
Is the 2018 GMC Sierra 2500 SLT a good truck?
Below are the Cars.com consumer ratings for the 2018 GMC Sierra 2500.
- Comfort 4.9
- Interior 4.9
- Performance 5.0
- Value 4.8
- Exterior 4.9
- Reliability 4.8
94% of drivers recommend this car
- Comfort 4.9
- Interior 4.9
- Performance 5.0
- Value 4.8
- Exterior 4.9
- Reliability 4.8
*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 2500 trims
-
GMC Sierra 2500 2018 Denali
7 Great Deals out of 77 listings starting at $34,995
- ${price_badge()}
- ${ami_badge()}
- ${battery_badge()}${ev_report_link()}
- ${hot_car_badge()}
- ${award_badge()}
- ${cpo_badge()}
${price_badge_description}
${ami_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}