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Used
2018 GMC Sierra 1500 SLE 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 1500 SLE
Vehicle information
Features
Reviews
The service department at prestige Mitsubishi in East
The service department at prestige Mitsubishi in East Providence is outstanding in particular. Gary goes way out of his way to assist his clients. He is professional, friendly, and always arrives to fill the needs of his clients
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 SLE
Vehicle information
Features
Reviews
hello to whom it may concern i recently brought a vehicle
hello to whom it may concern i recently brought a vehicle from sheehy ford an must say i have never gotton a better car buying experience in my life sales accssociate john gibson is the best this guy should definitely be reccognized an awarded for his out standing customer service an 100% honesty about selling cars his knowlege of vehicles was impressive i was so well impressed with him i brought too cars in one day definitley will be back soon again thanks to john for such a great experienec
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 SLE
Vehicle information
Features
Reviews
The dealership was great, but the price listed on Cars.
The dealership was great, but the price listed on Cars.com was understated by over $3,000.
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 SLE
Vehicle information
Features
Reviews
The entire staff is great!
The entire staff is great!, went in on a Saturday to look at a SUV for my son, they had it out front and warmed up and ready for a test driver. The purchase and sale could not have gone any smoother
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 SLE
Vehicle information
Features
Reviews
Process went smoothly.
Process went smoothly. The staff was able to find a way to get us into a vehicle.
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 SLE
Vehicle information
Features
Reviews
I want to thank you, Eric Kooistra, for all your help
I want to thank you, Eric Kooistra, for all your help with the purchase of my Colorado. You were truly an expert and provided exceptional service throughout the entire process. I am very satisfied with the attention I received and will definitely recommend you for your excellent work
Used
2018 GMC Sierra 1500 SLE
Vehicle information
Features
Reviews
Excellent prices and everyone was very friendly.
Excellent prices and everyone was very friendly.Highly recommended, excellent service and fast response. Thank you
Used
2018 GMC Sierra 1500 SLE
Vehicle information
Features
Used
2018 GMC Sierra 1500 SLE
Vehicle information
Features
Reviews
Excellent customer service.
Excellent customer service. The quick response and friendly approach made the whole experience smooth and helpful. I really appreciate the support I received. Based on my experience, I recommend the Your Choice Autos in Waukegan.
Used
2018 GMC Sierra 1500 SLE
Vehicle information
Features
Reviews
Looked at a vehicle, messaged dealer, quick response.
Looked at a vehicle, messaged dealer, quick response. Even did a video of the car and send to me. I recommend these guys.
Used
2018 GMC Sierra 1500 SLE
Vehicle information
Features
Reviews
They were amazing!
They were amazing! Great dealership from the communication, hospitality, pricing. All staff members were fabulous. I would highly recommend purchasing from them again. Tammy Stick, Fargo, ND
Used
2018 GMC Sierra 1500 SLE
Vehicle information
Features
Reviews
We've had a great experience with Key Auto Mall GMC
We've had a great experience with Key Auto Mall GMC purchasing our new 2025 Acadia. Brian MacGee was wonderful to work with along with General Manager Theron Maring and all the other great staff. Brian especially has spent a lot of time going over all we need to know about how this car works and has several times answered more questions since we purchased the car a week ago. He helped us purchase new cargo mats and get the protective coatings on the car, inside and out. Brian has been professional, friendly, and so helpful to us. We highly recommend Brian and the Key Auto Mall GMC team and will definitely consider them for our next auto purchase.
Used
2018 GMC Sierra 1500 SLE
Vehicle information
Features
Used
2018 GMC Sierra 1500 SLE
Vehicle information
Features
Used
2018 GMC Sierra 1500 SLE
Vehicle information
Features
Reviews
Sweet Rides is great.
Sweet Rides is great. Steven was very helpful and made the process a breeze. Thanks for all your help!
Used
2018 GMC Sierra 1500 SLE
Vehicle information
Features
Reviews
Second time buying a car from them.
Second time buying a car from them. They are really nice people to deal with.
Used
2018 GMC Sierra 1500 SLE
Vehicle information
Features
Reviews
Happy with the accord i purchased.
Happy with the accord i purchased. Great communication. Satisfied customer. Second car I purchased in the last 8 years from here. Dave helped me step by step.
Used
2018 GMC Sierra 1500 SLE
Vehicle information
Features
Reviews
so far so good I haven’t got the OK to buy it yet a
so far so good I haven’t got the OK to buy it yet a vehicle so we’ll see what happens
Vehicle information
Features
Vehicle information
Features
GMC Sierra 1500 prices by year
| Model year | Average price | Deals |
|---|---|---|
| 2026 GMC Sierra 1500 SLE | 4 Good deals | |
| 2025 GMC Sierra 1500 SLE | $43,755 | 13 Great deals |
| 2024 GMC Sierra 1500 SLE | $39,189 | 46 Great deals |
| 2023 GMC Sierra 1500 SLE | $36,544 | 23 Great deals |
| 2022 GMC Sierra 1500 SLE | $32,461 | 22 Great deals |
| 2021 GMC Sierra 1500 SLE | $30,526 | 21 Great deals |
| 2020 GMC Sierra 1500 SLE | $27,385 | 20 Great deals |
| 2019 GMC Sierra 1500 SLE | $25,351 | 23 Great deals |
| 2017 GMC Sierra 1500 SLE | $21,598 | 30 Great deals |
About the 2018 GMC Sierra 1500 SLE
SLE shown.
- 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 SLE cost?
The 2018 GMC Sierra 1500 SLE price depends on several factors, including optional features, mileage, vehicle history and location. The nationwide average price for a 2018 Sierra 1500 SLE is $23,337, with pricing starting at $13,000.
What is the MPG of the 2018 GMC Sierra 1500 SLE?
The 2018 GMC Sierra 1500 SLE 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 options, driving conditions, driving habits, vehicle maintenance, and other factors.
What are some similar vehicles and competitors of the 2018 GMC Sierra 1500 SLE?
The 2018 GMC Sierra 1500 SLE compares to and/or competes against the following vehicles:
Is the 2018 GMC Sierra 1500 SLE 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.
93% of drivers recommend this car
- Comfort 4.9
- Interior 4.8
- Performance 4.7
- Value 4.6
- Exterior 4.8
- Reliability 4.7
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) |
*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 1500 trims
-
GMC Sierra 1500 2018 SLT
77 Great Deals out of 502 listings starting at $14,850
-
GMC Sierra 1500 2018 Denali
27 Great Deals out of 217 listings starting at $19,500
-
GMC Sierra 1500 2018 Base
20 Great Deals out of 86 listings starting at $11,577
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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.
