Trim Report

GMC Sierra SL2020

Includes:15SIPU4WD|SL
$2,000
Starting From
36
Active Listings
—
Avg Mileage

Sourced from 36 dealer listings in the latest market snapshot as of

Min $2,000
Max $16,999
From $2,000
Fresh

SL Market Overview

All Trims Combined
From$12,980
$13K–$64K
1,643 listings88,694 avg miles
AT4
From$13,200
9,361 listings|$13K–$139K
AT4X
From$32,390
3,522 listings|$32K–$140K
Denali
From$1,000
12,458 listings|$1K–$100K
Denali Ultimate
From$45,135
3,663 listings|$45K–$101K
Elevation
From$15,885
15,507 listings|$16K–$109K
Limited
From$11,888
40 listings|$12K–$32K
Pro
From$15,000
5,542 listings|$15K–$95K
SL
From$2,000
36 listings|$2K–$17K
SLE
From$2,450
4,147 listings|$2K–$73K
SLT
From$925
15,203 listings|$925–$92K
W/T
From$750
86 listings|$750–$22K

2020 GMC Sierra SL Pricing

Price Trend

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36 listings and counting.

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Where to Find GMC Sierra SL

Location data for all 2020 GMC Sierra trims combined

40States

13% of the market sits in Texas, though listings span 40 states. Expand your search and you'll find more options at better prices.

GMC Sierra Fuel Economy

EPA fuel economy data for all 2020 GMC Sierra trims

16–26mpg combined
·
15-23city
·
19-30hwy
·
$3,250-$4,800/yr

With 20 configurations tested, the 2020 GMC Sierra ranges from 16 to 26 MPG combined. That's a 10 MPG gap that can add up to hundreds of dollars a year in fuel costs.

By Trim
Sierra 2WD - Automatic 10-spd
26mpg
3.0L 6-cyl Turbo · Rear-Wheel DriveDiesel
23 city30 hwy~$3,250/yr5/10 Average
Sierra 4WD - Automatic 10-spd
24mpg
3.0L 6-cyl Turbo · 4-Wheel DriveDiesel
22 city26 hwy~$3,500/yr4/10 Average
Sierra 4WD AT4 - Automatic 10-spd
24mpg
3.0L 6-cyl Turbo · 4-Wheel DriveDiesel
22 city26 hwy~$3,500/yr4/10 Average
Sierra 2WD - Automatic 8-spd
20mpg
2.7L 4-cyl Turbo · Rear-Wheel Drive
19 city22 hwy~$3,400/yr4/10 Average
Sierra 4WD - Automatic 8-spd
20mpg
2.7L 4-cyl Turbo · 4-Wheel Drive
19 city22 hwy~$3,400/yr4/10 Average
Sierra 2WD - Automatic 8-spd
19mpg
5.3L 8-cyl · Rear-Wheel Drive
17 city23 hwy~$3,550/yr3/10 Poor
Sierra 4WD - Automatic 10-spd
19mpg
5.3L 8-cyl · 4-Wheel Drive
16 city22 hwy~$3,550/yr3/10 Poor
Sierra 4WD - Automatic 8-spd
18mpg
5.3L 8-cyl · 4-Wheel Drive
16 city22 hwy~$3,750/yr3/10 Poor
Sierra 4WD AT4 - Automatic 10-spd
18mpg
5.3L 8-cyl · 4-Wheel Drive
16 city21 hwy~$3,750/yr3/10 Poor
Sierra 2WD - Automatic 6-spd
17mpg
4.3L 6-cyl · Rear-Wheel Drive
16 city21 hwy~$3,950/yr3/10 Poor
Sierra 2WD - Automatic 6-spd
17mpg
5.3L 8-cyl · Rear-Wheel Drive
15 city21 hwy~$3,950/yr3/10 Poor
Sierra 4WD - Automatic 10-spd
17mpg
6.2L 8-cyl · 4-Wheel Drive
15 city20 hwy~$4,800/yr3/10 Poor
Sierra 4WD - Automatic 6-spd
17mpg
5.3L 8-cyl · 4-Wheel Drive
15 city20 hwy~$3,950/yr3/10 Poor
Sierra 4WD - Automatic 6-spd
17mpg
4.3L 6-cyl · 4-Wheel Drive
15 city20 hwy~$3,950/yr3/10 Poor
Sierra 4WD AT4 - Automatic 10-spd
17mpg
6.2L 8-cyl · 4-Wheel Drive
15 city19 hwy~$4,800/yr3/10 Poor

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

2020 GMC Sierra SL FAQ

Trim-specific pricing and feature questions

How does the SL compare to other GMC Sierra trims?

Every GMC Sierra trim targets a different buyer. The 2020 model page compares all available trims side by side.

What should I know about maintaining the 2020 GMC Sierra SL?

The SL shares its core mechanicals with other GMC Sierra trims, so major service intervals are similar. The 2020 model page has the details.

What are the best years for the GMC Sierra SL?

Check the price-to-mileage ratio for each GMC Sierra SL year. The last year before a generation change is usually the most refined; the first year after is when resale drops fastest. The GMC Sierra overview compares all years side by side.

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