↑↓
move
↵
open
esc
close
2018 GMC Sierra prices in the U.S.
$28,000
Median pre-owned asking price
2,018 pre-owned listings · Updated September 10, 2026
Price your exact car
National price overview
Typical asking price range
$23,595 – $32,814 All 2,041 listings · Middle 50% of asking pricesMedian asking price
$27,995Trim, mileage and condition change what a comparable vehicle costs.
As of September 10, 2026, the median asking price for a used 2018 GMC Sierra in the U.S. is $28,000, based on 2,018 active dealer listings tracked by VinAssessment.
Price range, sample and methodology details
The median pre-owned asking price for a 2018 GMC Sierra in the U.S. is $28,000 based on 2,018 pre-owned listings (of 2,041 total).
Based on 2,041 active dealer listings, refreshed daily.
Typical: $23,595–$32,814 — the middle half of 2,041 asking prices
Median $27,995
$15K low
$50K high
Why the wide range? Price depends mostly on configuration and mileage — see below. This spread covers the middle 96% of asking prices: we exclude the cheapest and priciest 2% to reduce the influence of extreme values. This does not verify title status or guarantee that every erroneous listing is excluded.
$28,000
Pre-owned median (2,018)
110,041
Average mileage
What moves the price
Location
Typical asking prices are $17,999 in Maryland but $36,995 in New Mexico. These are different listing samples, not a measured location adjustment for the same vehicle.
Observed spread: up to $18,996Trim
The SLE typically asks $23,678, while the Denali asks $32,969 — same year, same market.
Observed spread: up to $9,291About these price differences
The $23,595–$32,814 typical range isn't randomness — two factors explain most of it:
Biggest factor in these observed spreads: Location. These groups contain different vehicles.
Find your mileage and trim in the configurator below.
Configure the exact car
Choose a state and trim once to update the connected price tables and charts for a 2018 GMC Sierra. Mileage adjusts the estimate only.
Trim
Estimated asking price · All trims
$27,995
$23,595
–
$32,814
2,041 listings · Nationwide
ⓘ This is a modelled estimate based on current listings and market data. Actual prices may vary.
Estimate assumptions
at typical mileage, nationwide
Modelled from 2,041 real asking prices, adjusted for mileage and location. An illustrative estimate from mixed listing groups, not matched vehicles. Not a formal appraisal.
Live 2018 GMC Sierra listings, priced by VIN
Compared with all listings
All-listings median $27,995
2018 GMC Sierra
SLT
$14,900
VIN 3GTU2NEC0JG270760
−$13,095 · vs all-listings median
2018 GMC Sierra
SLE
$14,995
VIN 3GTU2MEC6JG137656
−$13,000 · vs all-listings median
2018 GMC Sierra
SLT
$14,998
VIN 1GTV2NEC5JZ350334
−$12,997 · vs all-listings median
View 9 more priced VINs
- SLE VIN 1GTV2MECXJZ170311 $15,999 −$11,996 vs median
- SLT VIN 1GTV2NEC0JZ171036 $16,990 −$11,005 vs median
- Trim not specified VIN 1GTN2LEC3JZ148466 $16,995 −$11,000 vs median
- Trim not specified VIN 1GTV2LEC3JZ233498 $17,211 −$10,784 vs median
- SLE VIN 1GTR1MEC3JZ127983 $19,900 −$8,095 vs median
- SLT VIN 3GTU2NEC5JG366450 $20,025 −$7,970 vs median
- SLE VIN 1GTV2MEC3JZ190285 $20,900 −$7,095 vs median
- SLT VIN 3GTU2NEC3JG371999 $24,500 −$3,495 vs median
- SLT VIN 3GTU2NEC1JG500337 $24,249 −$3,746 vs median
Price differences are not deal ratings. Compare equipment, mileage and vehicle history before judging a price.
Every VIN links to a full market report: decode, active listings and the local price band.
2018 GMC Sierra: a fair price for your mileage
Mileage means the miles recorded on the odometer. Compare asking prices in your mileage band, then select a trim — the equipment version — to narrow the comparison where data is available.
Region · trim United States · All trims
Active listings 2,041
Median asking price $27,995
Mileage means the total miles on the odometer. Each point shows the median asking price for a mileage band; shaded areas show the middle 50% of prices.
Swipe the chart horizontally to see every mileage band.
Compare all trims at the same mileage
Compare like-for-like mileage
United States · all states · September 10, 2026
Read across a row to compare trims at a similar odometer reading. Each price is the median asking price for that group, not a valuation of your exact car.
Scroll sideways to compare all trims. Mileage stays visible on the left.
| Mileage (odometer) | All listings | SLT | Denali | SLE |
|---|---|---|---|---|
| Under 15K miles | $23,922 | — | — | — |
| 15K–30K miles | $37,497 | $39,194 | — | $35,995 |
| 30K–45K miles | $37,200 | $37,748 | $40,184 | $27,980 |
| 45K–60K miles | $34,130 | $34,223 | $37,570 | $28,336 |
| 60K–75K miles | $32,924 | $32,793 | $35,214 | $25,684 |
| 75K–90K miles | $30,995 | $30,883 | $32,996 | $25,488 |
| 90K–105K miles | $29,298 | $29,086 | $31,219 | $24,460 |
| Over 105K miles | $24,836 | $24,812 | $29,995 | $20,631 |
“—” means insufficient data: at least 3 listings per trim and mileage band, or 5 for all trims combined. Equipment, condition and location can still differ within a row.
Counts cover the selected region and trim, including listings without usable mileage. Thin mileage bands and rare or unknown trims may be omitted from the chart.
View the full national mileage price table
Fair price by mileage — all versions combined
| Mileage ⓘ | Based on ⓘ | Fair price ⓘ | Typical range ⓘ |
|---|---|---|---|
| Under 15K miles | 5 listings | $23,922 | $20K–$131K |
| 15K–30K miles | 20 listings | $37,497 | $34K–$40K |
| 30K–45K miles | 35 listings | $37,200 | $28K–$39K |
| 45K–60K miles | 118 listings | $34,130 | $29K–$37K |
| 60K–75K miles | 196 listings | $32,924 | $30K–$35K |
| 75K–90K miles | 272 listings | $30,995 | $28K–$33K |
| 90K–105K miles | 368 listings | $29,298 | $27K–$31K |
| Over 105K miles | 1,024 listings | $24,836 | $21K–$29K |
United States — all states. These bands combine different trims, conditions and listing histories. They do not hold trim or condition constant.
2018 GMC Sierra: price by trim
United States · all states · September 10, 2026. Counts and prices below are national totals for each trim. The shared market filters update this table for your selected state and highlight your trim.
| Trim | Based on ⓘ | Median price ⓘ | Typical range ⓘ | Where it sits ⓘ |
|---|---|---|---|---|
| SLT | 1,106 listings | $27,995 | $24K–$32K | |
| Denali | 524 listings | $32,969 | $29K–$40K | |
| SLE | 229 listings | $23,678 | $20K–$27K |
Understand the differences
2018 GMC Sierra: VIN configurations and specifications
Multiple VIN patterns can share the same trim. Compare their recorded equipment, then open a specification page for the full details.
-
SLE 4.3L 6-cyl VIN pattern: 1GTR1MEH · year code J50 VINs in our database Observed VINs, not production totals
-
SLE 6.6L 8-cyl · 4WD VIN pattern: 1GT12SEY · year code J455 VINs in our database Observed VINs, not production totals
-
Denali 5.3L 8-cyl VIN pattern: 3GTP1PEC · year code J$29,323 Median asking price · U.S. 15 priced listings · September 6, 2026
-
SLT 5.3L 8-cyl · 4WD VIN pattern: 3GTU2NER · year code J$28,415 Median asking price · U.S. 45 priced listings · September 6, 2026
Show 20 more configurations
-
Denali 6L 8-cyl · 4WD VIN pattern: 1GT42YEG · year code J27 VINs in our database Observed VINs, not production totals
-
Denali 6.2L 8-cyl VIN pattern: 3GTP1PEJ · year code J266 VINs in our database Observed VINs, not production totals
-
Fleet/Base 5.3L 8-cyl · 4WD VIN pattern: 3GTU2LEC · year code J$20,598 Median asking price · U.S. 7 priced listings · September 6, 2026
-
Fleet/Base 4.3L 6-cyl VIN pattern: 1GTR1LEH · year code J$16,858 Median asking price · U.S. 8 priced listings · September 6, 2026
-
Fleet/Base 6.6L 8-cyl · 4WD VIN pattern: 1GT42VCY · year code J200 VINs in our database Observed VINs, not production totals
-
Fleet/Base 6L 8-cyl VIN pattern: 1GT01REG · year code J63 VINs in our database Observed VINs, not production totals
-
SLT 6.6L 8-cyl · 4WD VIN pattern: 1GT12TEY · year code J$39,809 Median asking price · U.S. 68 priced listings · September 6, 2026
-
SLT 6.2L 8-cyl · 4WD VIN pattern: 1GTV2NEJ · year code J$29,900 Median asking price · U.S. 6 priced listings · September 6, 2026
-
SLE 6.6L 8-cyl · 4WD VIN pattern: 1GT42WCY · year code J142 VINs in our database Observed VINs, not production totals
-
Denali 6.6L 8-cyl · 4WD VIN pattern: 1GT42YEY · year code J$43,599 Median asking price · U.S. 64 priced listings · September 6, 2026
-
SLE 6L 8-cyl · 4WD VIN pattern: 1GT42WCG · year code J87 VINs in our database Observed VINs, not production totals
-
SLT 6.2L 8-cyl VIN pattern: 3GTP1NEJ · year code J85 VINs in our database Observed VINs, not production totals
-
Denali 6.6L 8-cyl · 4WD VIN pattern: 1GT12UEY · year code J$44,195 Median asking price · U.S. 138 priced listings · September 6, 2026
-
Fleet/Base 4.3L 6-cyl · 4WD VIN pattern: 3GTU2LEH · year code J24 VINs in our database Observed VINs, not production totals
-
SLT 6L 8-cyl · 4WD VIN pattern: 1GT12TEG · year code J$37,052 Median asking price · U.S. 8 priced listings · September 6, 2026
-
SLT 5.3L 8-cyl · 4WD VIN pattern: 1GTV2NEC · year code J$24,998 Median asking price · U.S. 33 priced listings · September 6, 2026
-
SLE 4.3L 6-cyl · 4WD VIN pattern: 3GTU2MEH · year code J57 VINs in our database Observed VINs, not production totals
-
SLE 6L 8-cyl · 4WD VIN pattern: 1GT02SEG · year code J28 VINs in our database Observed VINs, not production totals
-
SLT 6L 8-cyl · 4WD VIN pattern: 1GT22TEG · year code J$37,495 Median asking price · U.S. 5 priced listings · September 6, 2026
-
SLE 5.3L 8-cyl VIN pattern: 1GTN1MEC · year code J35 VINs in our database Observed VINs, not production totals
Where these specifications come from
Specifications combine decoded VIN data, including NHTSA vPIC , with inventory records. If decoding does not identify a trim, a recorded inventory trim may be shown. VIN patterns do not confirm every installed option.
Counts describe observed VINs in our database, not factory production totals. Prices are median asking prices from qualifying U.S. listings, not original MSRP. Check the vehicle’s build sheet for exact equipment.
FACTORY REFERENCE
2018 GMC Sierra factory brochure
Model-year reference for features and equipment. Actual VIN equipment may differ.
No verified factory brochure is currently listed for this exact model year.
Need equipment for a specific vehicle? Look up its factory window sticker →
Price history
Change state or trim for this report →
View national price history · all trims
Median asking price by month — U.S., all trims · shaded band is the typical range (25th–75th percentile)
The median listing price for a 2018 GMC Sierra is $27,969 (September 2026) — up 12.0% from $24,969 in March 2026.
Monthly price table
| Month | Median price | Typical range | Vehicles listed |
|---|---|---|---|
| September 2026 | $27,969 | $23K–$33K | 332 |
| August 2026 | $27,998 | $23K–$33K | 485 |
| July 2026 | $27,999 | $23K–$33K | 477 |
| June 2026 | $27,999 | $23K–$34K | 313 |
| May 2026 | $25,944 | $22K–$34K | 92 |
| April 2026 | $25,999 | $22K–$32K | 114 |
| March 2026 | $24,969 | $22K–$32K | 108 |
2018 GMC Sierra prices by state
See how asking prices vary across states. Looking for a 2018 GMC Sierra for sale near you? Open your state's price guide to compare its market, then follow the local listings link to browse available vehicles.
United States · all trims · snapshot September 10, 2026. Explore state markets below. Prices and counts cover all trims in each state; the full comparison table remains available below the map.
Explore 43 more state markets
Hawaii
Typical asking price
$28,693
- Active listings
- 3
- Listed this year
- 5
Not enough active listings for a state price report.
View the U.S. inventory map
What does this map show?
The numbers are active listings, not prices. Badges mark the 8 busiest mapped states to keep the map readable; other states can also have listings.
Hover over a state or focus it with your keyboard for details. Click a linked state or its number to open that state's price page.
State details will appear here. On a phone, tap a linked state to open its prices; use the full table for easier browsing.
Scroll the map sideways on smaller screens. Numbers stay large enough to read.
Most active listings
Other states with active listings
No active listings or insufficient data
Alaska and Hawaii are not drawn on this map. Where qualifying data is available, they appear in the full state table. Grey does not necessarily mean no cars are for sale.
View all states and prices
Listed this year counts every 2018 GMC Sierra first listed in 2026 (sold and active), with currently active cars as a floor. Typical price is the median of each car's latest asking price — or the average of active listings where this-year data is thin.
EXPLORE THE YEARS
Other GMC Sierra years
Same model, a different chapter. Start with a nearby year, or open the complete timeline.
An earlier model year
2017
GMC Sierra
Typical asking price
$23,995
Explore this year →
You are here
2018
GMC Sierra
Typical asking price
$27,995
Your current report
A newer model year
2019
GMC Sierra
Typical asking price
$31,579
Explore this year →
See how model-year prices compare
U.S. market · All trimsDifferent model years, shown on the same dollar scale. Median asking price where available; otherwise average. These are different vehicles, not a forecast of your car’s value.
- 2026 $64,484 Median
- 2025 $49,143 Median
- 2024 $48,038 Median
- 2023 $45,200 Median
- 2022 $42,096 Median
- 2021 $36,645 Median
- 2020 $35,936 Median
- 2019 $31,579 Median
-
You are here 2018 $27,995 Median
- 2017 $23,995 Median
- 2016 $23,354 Median
- 2015 $20,998 Median
- 2014 $17,722 Median
- 2013 $15,995 Median
- 2012 $14,088 Median
- 2011 $13,900 Median
Showing the newest 16 priced model years plus your current year when older. Open the complete timeline below for older years.
Explore all 34 other model years
Pick a year to open its price report. Prices compare different vehicles and equipment, not the changing value of one car.
Nearby model years
2014
$17,722
2015
$20,998
2016
$23,354
2017
$23,995
2019
$31,579
2020
$35,936
2021
$36,645
2022
$42,096
More model years
1989
$16,995
1993
$25,448
1994
$15,900
1995
$12,500
1996
$12,900
1997
$13,900
1998
$14,000
1999
$8,995
2000
$8,995
2001
$10,131
2002
$9,996
2003
$9,995
2004
$12,995
2005
$11,900
2006
$11,448
2007
$11,995
2008
$11,988
2009
$10,424
2010
$11,950
2011
$13,900
2012
$14,088
2013
$15,995
2023
$45,200
2024
$48,038
2025
$49,143
2026
$64,484
MEET THE REST OF THE LINEUP
More 2018 GMC prices
Something else catch your eye? Explore other 2018 GMC models before you decide.
GMC Acadia
Explore this model →
GMC Terrain
Explore this model →
GMC Yukon
Explore this model →
GMC Yukon XL
Explore this model →
GMC Canyon
Explore this model →
GMC Savana
Explore this model →Prices shown for other models are average asking prices in the national snapshot. Photos are representative; trim and equipment vary.
What would a 2018 GMC Sierra cost per month?
Estimate the monthly payment on a $27,995 vehicle. Move the numbers to match your own loan.
10% down
7.0% is an illustrative starting rate — use your own lender quote.
Loan term
Estimated monthly payment
$499
per month
60 months · 7.0% APR · $2,800 down
Amount financed
$25,195
Total interest
$4,745
Estimate only. Excludes tax, title, registration and dealer fees, and assumes a fixed-rate loan with equal monthly payments. Your actual rate depends on your credit and lender.
Before you buy
A few important steps can help you buy with confidence.
- Check title and accident history
- Arrange an independent inspection
- Review factory equipment
- Check recalls by VIN
Frequently asked questions
Why do 2018 GMC Sierra prices range from $14,900 to $49,919?
The spread comes down to configuration and mileage: higher-mileage, base-configuration examples sit near the low end, while low-mileage and premium configurations reach the top. Half of all listings fall between $23,595 and $32,814 — see the mileage and trim breakdowns above for where a specific vehicle lands.
Is $28,890 a good price for a 2018 GMC Sierra?
$28,890 is the market average as of September 10, 2026. The $27,995 median is a comparison point, not a deal rating. Compare the same trim and mileage band, and check condition, equipment and vehicle history.
How many 2018 GMC Sierra are for sale right now?
2,041 in total, nearly all pre-owned. Counts refresh daily from live dealer inventory.
Is this the trade-in value or private-party value of my 2018 GMC Sierra?
These figures describe dealer asking prices, not trade-in offers, private-party sale values or completed sale prices. Use them to compare advertised vehicles. To find out what a buyer or dealer would pay for your car, request an offer that takes its mileage, condition, equipment and history into account.
How we calculate these prices
We track 2,041 active listings for this vehicle across dealer sites nationwide, updated every day. Average and median are computed from real asking prices on live listings. We exclude the top and bottom 2% of prices to reduce the influence of extreme values. This does not verify title status or guarantee that every erroneous listing is excluded. Prices reflect dealer asking prices — not final sale prices — and exclude taxes, fees, and incentives. Trim and mileage move the price more than any other factor; see the breakdowns above.
Want the original factory equipment and MSRP behind a specific car? Get the window sticker by VIN →
Own a 2018 GMC Sierra? See what it's worth →
KEEP EXPLORING
More car research
Explore other vehicles, local markets and vehicle-history tools.
