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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
Warson Woods, MO
- 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
Rear break repair, engine filter replacement, stra
Good experience in my visit today, nice people they great and say hi or hello. Some of them are friendly. Some are not, but they over all their a ok. It’s nice to have a good service. And I’m satisfied with the loaner car that they loan to me for a couple of days. And I do appreciate very much.
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
Easy and reliable
I came to look for a reliable car with a good price and I found here w/ Leonard. He was so helpful every step of the way.
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
Vehicle information
Features
Reviews
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
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 SLT
Vehicle information
Features
Reviews
Daryl Hercules
Service Advisor, Kevin Gromer, was very helpful and professional. The tech, Ryan Hellrung, worked through lunch to complete the repair that day. Hats off to both of these Lou Fusz employees.
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
Vehicle information
Features
Reviews
Overall good drove over three hours to arrive, pain that
Overall good drove over three hours to arrive, pain that policy is they don?t accept checks or certified checks when purchasing outright. Did money transfer before leaving home and waited an hour at dealership for verification of transfer total four hours (ridicules). Other than that process was simple enough.






Used
2018 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
I was very happy with my time dealing with Charles.
I was very happy with my time dealing with Charles. He had the truck I wanted to test drive ready before I arrived at the dealership. I felt like family. Charles was very, very patient with me the whole time.






Used
2018 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
Great service!
Great service!I was picked up at the airport in a very timely manner.I recommend this dealership to anyone I meet that is looking for a vehicle.






Used
2018 GMC Sierra 1500 Base
Vehicle information
Features
Reviews
My daughter purchased a new car from Sapaugh last night
My daughter purchased a new car from Sapaugh last night and the experience was the best I have had buying a new car. Logan Cash and Rick Murray were great to work with and took the time to explain everything to my daughter. If anyone is looking for a new car, I highly recommend contacting Logan Cash at Sapaugh.
Used
2018 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
Great atmosphere and Mike did an awesome job helping with
Great atmosphere and Mike did an awesome job helping with the purchase of my vehicle, I would recommend Jim Butler of Fenton ,MO to anyone looking to purchase a vehicle, thanks Mike






Used
2018 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
It was a great experience, I purchased the 2020 GMC
It was a great experience, I purchased the 2020 GMC Canyon Denali from Laura Buick GMC, I love the vehicle and service rendered by the dealership was incredible. They are a great dealership to patronize because they make their customers feel valued.






Used
2018 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
Justin Scheaffer supported my acquisition of a 2025 GMC
Justin Scheaffer supported my acquisition of a 2025 GMC Denali truck with total customer care in mind. From finding the exact vehicle I wanted to it delivery, Justin was there, front and center - An Outstanding job; definitely a go-to professional who gets my highest rating!! Thanks Justin - Will stay in touch!






Used
2018 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
Thank you Bill Erwin!
Bill Erwin was so helpful in our purchasing our new SUV. He had all the answers and helpful attitude to help us make our decision. We have used this dealership for years and have purchased several vehicles from them. The service dept has always been great. Thank you Bill for calling and even following up with us that we were all set up etc. This purchase was handled with ease, no stress. We appreciate Bill and this dealership!






Used
2018 GMC Sierra 1500 Denali
Vehicle information
Features
Reviews
I always get great customer service from everyone at
I always get great customer service from everyone at Laura Buick. My go to guy is David Day. They always do a great job with any issues with my car.






Used
2018 GMC Sierra 1500 SLT
Vehicle information
Features






Used
2018 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
From the first time I set foot on the Buick car lot, Beau
From the first time I set foot on the Buick car lot, Beau set off a great car search experience for me and my family. Not only was he awesome but everyone I met there was warm, friendly and caring. The O'Fallon Buick GMC not only brought back my faith in a car salesperson but also purchasing at a car dealership. From the salesman to the financial department each person took time to make sure you understood exactly what was happening. Hopefully, I want have to purchase another car for a while, but if so, I know where to go.
Used
2018 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
Second truck purchased with Elco Chevrolet.
Second truck purchased with Elco Chevrolet. They are always priced fair. Reach out to Dylan if you want help and he will provide an exceptional service.






Used
2018 GMC Sierra 1500 Denali
Vehicle information
Features
Reviews
Rick was awesome!
Rick was awesome!! Fast, friendly and would recommend buying a vehicle from Rick Valenti. Call them!!
There are 20 matching cars close to your year range.
Vehicle information
Features






Used
2020 GMC Sierra 1500 AT4
Vehicle information
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Used
2019 GMC Sierra 1500 SLT
Vehicle information
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Used
2020 GMC Sierra 1500 Elevation
Vehicle information
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Used
2020 GMC Sierra 1500 SLT
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Used
2017 GMC Sierra 1500 SLT
Vehicle information
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Used
2017 GMC Sierra 1500 SLT
Vehicle information
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Used
2017 GMC Sierra 1500 SLT
Vehicle information
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GMC Certified
2020 GMC Sierra 1500 Denali
Vehicle information
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Used
2019 GMC Sierra 1500 SLE
Vehicle information
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GMC Certified
2020 GMC Sierra 1500 SLE
Vehicle information
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Used
2020 GMC Sierra 1500 AT4
Vehicle information
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Used
2020 GMC Sierra 1500 Elevation
Vehicle information
Features






Used
2017 GMC Sierra 1500 SLE
Vehicle information
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Used
2016 GMC Sierra 1500 Denali
Vehicle information
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Used
2016 GMC Sierra 1500 SLT
Vehicle information
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Used
2020 GMC Sierra 1500 AT4
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Used
2020 GMC Sierra 1500 SLE
Vehicle information
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Used
2020 GMC Sierra 1500 SLT
Vehicle information
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GMC Sierra 1500 prices by year
Model year | Prices from | Deals |
---|---|---|
2026 GMC Sierra 1500 | $40,656 | |
2025 GMC Sierra 1500 | $32,914 | 8 Great deals |
2024 GMC Sierra 1500 | $31,995 | 11 Great deals |
2023 GMC Sierra 1500 | $34,000 | 5 Great deals |
2022 GMC Sierra 1500 | $34,500 | 31 Good deals |
2021 GMC Sierra 1500 | $24,995 | 5 Great deals |
2020 GMC Sierra 1500 | $24,675 | 33 Good deals |
2019 GMC Sierra 1500 | $17,750 | 12 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 $28,893, with pricing starting at $9,967.
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.
Research the 2018 GMC Sierra 1500
Compare the 2018 GMC Sierra 1500
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