Trim Report

GMC Sierra SLT2018

Includes:15SIPU4WD|SLT
$1,500
Starting From
15,792
Active Listings
—
Avg Mileage

Sourced from 15,792 active dealer listings as of

Min $1,500
Max $139,900
From $1,500
Fresh

SLT Market Overview

All Trims Combined
From$10,966
$11K–$65K
1,106 listings102,215 avg miles
AT4
From$18,600
9,750 listings|$19K–$133K
AT4X
From$35,491
3,929 listings|$35K–$109K
Denali
From$4,500
11,676 listings|$5K–$104K
Denali Ultimate
From$44,601
3,546 listings|$45K–$101K
Elevation
From$13,500
18,101 listings|$14K–$97K
Limited
From$12,459
31 listings|$12K–$30K
Pro
From$12,980
6,540 listings|$13K–$69K
SL
From$2,709
45 listings|$3K–$21K
SLE
From$1,650
4,915 listings|$2K–$70K
SLT
From$1,500
15,792 listings|$2K–$140K
W/T
From$3,000
99 listings|$3K–$25K

2018 GMC Sierra SLT Pricing

Price Trend

Building price history...

Plenty of options. Let us narrow it down.

15,792 active listings means opportunity, but also overwhelm. Set your criteria and we'll surface the best matches.

Set up smart alertsFrom $5/week

Where to Find GMC Sierra SLT

Location data for all 2018 GMC Sierra trims combined

39States

The biggest cluster of inventory is in Texas (13%), but the remaining listings are spread across 38 other states nationwide.

GMC Sierra Fuel Economy

EPA fuel economy data for all 2018 GMC Sierra trims

17–20mpg combined
·
15-18city
·
19-24hwy
·
$2,200-$3,400/yr

The 2018 GMC Sierra delivers 17 to 20 MPG combined across 14 powertrain combinations. If fuel cost matters to you, pay attention to engine and drivetrain. The spread is significant.

By Trim
Sierra 15 Hybrid 2WD - Automatic 8-spd
20mpg
5.3L 8-cyl · Rear-Wheel Drive
18 city24 hwy~$2,200/yr4/10 Average
Sierra C15 2WD - Automatic 6-spd
20mpg
4.3L 6-cyl · Rear-Wheel Drive
18 city24 hwy~$2,200/yr4/10 Average
Sierra C15 2WD - Automatic 6-spd
19mpg
5.3L 8-cyl · Rear-Wheel Drive
16 city23 hwy~$2,300/yr3/10 Poor
Sierra K15 4WD - Automatic 6-spd
19mpg
4.3L 6-cyl · 4-Wheel Drive
17 city22 hwy~$2,300/yr3/10 Poor
Sierra 15 Hybrid 4WD - Automatic 8-spd
18mpg
5.3L 8-cyl · 4-Wheel Drive
16 city21 hwy~$2,450/yr3/10 Poor
Sierra C15 2WD - Automatic 8-spd
18mpg
5.3L 8-cyl · Rear-Wheel Drive
16 city22 hwy~$2,450/yr3/10 Poor
Sierra K15 4WD - Automatic 6-spd
18mpg
5.3L 8-cyl · 4-Wheel Drive
16 city22 hwy~$2,450/yr3/10 Poor
Sierra C15 2WD - Automatic 8-spd
17mpg
6.2L 8-cyl · Rear-Wheel Drive
15 city21 hwy~$3,400/yr3/10 Poor
Sierra C15 Cab Chassis 2WD - Automatic 6-spd
17mpg
5.3L 8-cyl · Rear-Wheel Drive
15 city20 hwy~$2,600/yr3/10 Poor
Sierra K15 4WD - Automatic 8-spd
17mpg
6.2L 8-cyl · 4-Wheel Drive
15 city20 hwy~$3,400/yr3/10 Poor
Sierra K15 4WD - Automatic 8-spd
17mpg
5.3L 8-cyl · 4-Wheel Drive
15 city20 hwy~$2,600/yr3/10 Poor
Sierra K15 Cab Chassis 4WD - Automatic 6-spd
17mpg
5.3L 8-cyl · 4-Wheel Drive
15 city19 hwy~$2,600/yr3/10 Poor

Source: U.S. Environmental Protection Agency (EPA)

Is the SLT Worth It?

Common questions about the 2018 GMC Sierra SLT

How does the SLT compare to other GMC Sierra trims?

with 15,792 listings tracked, the SLT sits in a specific spot in the 2018 GMC Sierra lineup. Compare pricing across all trims on the 2018 GMC Sierra page.

What should I know about maintaining the 2018 GMC Sierra SLT?

Budget for standard SLT maintenance plus any trim-specific items. Review the known issues on the model year page for areas to inspect before purchasing.

What are the best years for the GMC Sierra SLT?

The best model year for the GMC Sierra SLT comes down to the price-to-mileage ratio. Compare all years on the GMC Sierra overview.

Get GMC Sierra market updates

We'll email you when prices shift or new data comes in for the 2018 GMC Sierra.

No spam. We'll only reach out about GMC Sierra features.