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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
Allen, TX
- 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.






Used
2019 GMC Sierra 1500 SLT
Vehicle information
Features






Used
2018 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
They say the most loyal customers come from ones who have
They say the most loyal customers come from ones who have an issue and the company makes it right, even if it wasn?t their fault. This couldn?t be more true with the service department at McKinney GMC. They took an issue that was not their fault, and fought alongside us to get it rectified and ensure a positive outcome for us and I will be forever grateful for John, Rob, Amanda, Caleb, and Victor for putting in the extra work to help get this resolved successfully. We just picked up our vehicle after it being in service for 5 months, to no fault of the dealership, but due to an issue with the insurance adjuster. Our vehicle had shut down due to what was later determined to be contaminated fuel, but the insurance adjuster made a mistake in his findings, and denied it. The service department answered every question, provided every document, picture, and detail I requested as I was fighting this with insurance, and let me tell you, I requested a lot. And they did it with grace, even on the days I sat in their dealership for hours on end collecting things. We had also contacted GMC/GM customer service and the McKinney service department did all they could to work with them, and helped us to have the claim resubmitted to insurance. After a long and painful process, we finally have our vehicle back, insurance rightfully covered the work, all because of the dedication of this team. McKinney GMC will have a customer for life in me. Thank you again team for all you did!
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
The staff at Stonebriar is top-notch.
The staff at Stonebriar is top-notch. The staff is friendly and courteous. The repair work is always excellent.
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 Denali
Vehicle information
Features
Reviews
Contacted on a Thursday, went in and purchased on a
Contacted on a Thursday, went in and purchased on a Saturday and picked it up on Tuesday. Super Easy and Jerome was a helpful and knowable salesman along with Austin for his help with financing.
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 Denali
Vehicle information
Features
Reviews
Very easy to deal with...stress free visit
Doren was very easy to work with and knowledgeable about the vehicles. He was very professional. No sales pressure. Did not buy yet. Hopefully what I'm looking for will come in soon.
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
Cross Country
My Subaru Forester was ideal for the task at hand. Salesman Nick, Derrick in service, Ben in mechanics covered all necessary elements. This vehicle was absolutely reliable throughout a 3,000 mile drive through British Columbia to Alaska. The team of CarMax, Hoover AL were as accommodating as possible in preparation and the drive was successful.
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.






Vehicle information
Features






Used
2018 GMC Sierra 1500 SLT
Vehicle information
Features






Used
2018 GMC Sierra 1500 SLT
Vehicle information
Features






Used
2018 GMC Sierra 1500 Denali
Vehicle information
Features
Reviews
Easy Buying Overall
Courage did an excellent job in the sales experience for the Porsche Cayenne we bought. The only complaint I have is the wait time for the financing to go through. This was due to the fact that it was a 2014 model. But, again, financing experience at any dealer has never been better or worse.






Used
2018 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
Great used car selection
Great inventory selection and friendly staff. Facility was nice and they took care of me. Definitely recommend. They have great truck selection. They answered all my questions.






Used
2018 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
I recommend anyone to Jacob Blau in sales with Five Star
I recommend anyone to Jacob Blau in sales with Five Star Chevrolet. He helped me get my Silverado with a truly smooth and seamless process!






Used
2018 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
Buying Bronco Sport
Miguel was awesome and very helpful! He answered all my questions and was very patient. I had a pleasant buying experience at 5 Star Ford in Lewisville, and definitely would recommend.






Used
2018 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
Profesional
Good and very profesional people was very nice and kind and work a good deal for me and get the most value for my use car.






Vehicle information
Features
Reviews
Mini Cooper Repair - Mini of Dallas
Oscar Miranda took great care of me and his tech (unfortunately, I don't recall his name) went above and beyond to help me figure out a few things related to the Nav system and a long-term, irritating issue with my trunk partition. Will definitely go back.






Used
2018 GMC Sierra 1500 SLT
Vehicle information
Features






Used
2018 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
Chris Collyer in Finance Department is excellent
After we purchased our Tucson from salesman Dan Fletcher (excellent service as well) Chris did a stellar job helping an Air Force veteran! Thanks for your help Chris!






Used
2018 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
Great Car Buying Experience
car buying process is so easy at this dealership. The sales rep , Thomas Young, was very accomodating also. No haggle, the price you see online is the same price you get.
Used
2018 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
Judy Williamson
Wonderful people. Kind & very knowledgble. Would recommend them to anybody.
Vehicle information
Features
Reviews
I purchased a 2018 BMW 650xi from Top Line Auto in
I purchased a 2018 BMW 650xi from Top Line Auto in February 2024. Don't let the size of this dealership fool you. This is an enthusiasts' paradise. So many high end, high quality vehicles in their showroom to fall in love with. My sales rep, Aleks, went above & beyond to get me into my new baby. He even recommended a lender that beat the market interest rate based on my credit score. The experience was a blast & I can't recommend them enough.






Used
2018 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
James Wood Auto Dealership
Rachel scheduled my appointment and was very courteous while checking me in and upon my departure. The technician did a great job of diagnosing my problem and getting it. Corrected






Used
2018 GMC Sierra 1500 Denali
Vehicle information
Features
Reviews
The guys at James Wood Autopark are great.
The guys at James Wood Autopark are great. They are friendly fast and super easy to work with. Thank you so much guys keep up the great work.






Used
2018 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
Wendy did not ask me to write a review but I do want to
Wendy did not ask me to write a review but I do want to mention her because she helped us out in a relaxed, motherly manner. I feel she did more than necessary which was sweet. The steps and processes of our 2 trade-ins for a pre-owned vehicle also happened pretty quickly and without issues on their end. Great company. Would return.
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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 $29,266, with pricing starting at $9,995.
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 4.8 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 4.8
94% of drivers recommend this car
- Comfort 4.9
- Interior 4.8
- Performance 4.7
- Value 4.6
- Exterior 4.8
- Reliability 4.8
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.