Trim Report

GMC Sonoma SLS1999

Includes:SONOMA|SLS
$3,500
Starting From
26
Active Listings
—
Avg Mileage

Sourced from 26 dealer listings in the latest market snapshot as of

Min $3,500
Max $15,000
From $3,500
Fresh

SLS Market Overview

All Trims Combined
From$6,500
$7K–$13K
4 listings87,500 avg miles
SL
From$4,800
6 listings|$5K–$13K
SLS
From$3,500
26 listings|$4K–$15K

1999 GMC Sonoma SLS Pricing

Price Trend

Building price history...

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Where to Find GMC Sonoma SLS

Location data for all 1999 GMC Sonoma trims combined

13States

If you're near Delaware, you're in luck: 12% of listings are there. But with 13 states represented, there's likely one near you too.

GMC Sonoma Safety & Reliability

Safety data for all 1999 GMC Sonoma trims

Elevated

Federal safety data shows 1 recalls and 83 complaints for the 1999 GMC Sonoma, a elevated safety profile overall. Check the known issues section below for the most common problem areas.

1
Recalls
83
Complaints
7
Crashes
1
Fires
Recall Findings
07E0210002007-12-03
FUEL SYSTEM, OTHER:STORAGE:TANK ASSEMBLY:PRESSURE RELIEF DEVICES

CERTAIN DELPHI FUEL PRESSURE REGULATORS, P/NOS. FP10020-11B1, FP10026-11B1, AND FP10027-11B1, SOLD AFTER JANUARY 9, 2007, AS AFTERMARKET EQUIPMENT FOR VARIOUS PASSENGER VEHICLES LISTED ABOVE. THE UNIVERSAL PRESSURE REGULATORS (UPR) WERE PRODUCED WITHOUT AN O'RING AND RETAINER.

FUEL MAY LEAK, POSSIBLY RESULTING IN A FIRE.

View at NHTSA

Source: National Highway Traffic Safety Administration (NHTSA)

Top Complaint Areas

Of 83 issues reported over 1 model years, service brakes, hydraulic problems are the most common for the 1999 GMC Sonoma. A pre-purchase inspection should focus here first.

01Service Brakes, Hydraulic12
02Seats10
03Structure9
04Air Bags6
05Power Train6
83 total across 1 model years (1999–1999)Full data at NHTSA.gov
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GMC Sonoma Fuel Economy

EPA fuel economy data for all 1999 GMC Sonoma trims

16–23mpg combined
·
14-20city
·
19-26hwy
·
$2,950-$4,200/yr

The 1999 GMC Sonoma delivers 16 to 23 MPG combined across 6 powertrain combinations. If fuel cost matters to you, pay attention to engine and drivetrain. The spread is significant.

By Trim
Sonoma 2WD - Manual 5-spd
23mpg
2.2L 4-cyl · Rear-Wheel Drive
20 city26 hwy~$2,950/yr-1/10 Poor
Sonoma 2WD - Automatic 4-spd
19mpg
2.2L 4-cyl · Rear-Wheel Drive
17 city24 hwy~$3,550/yr-1/10 Poor
Sonoma 2WD - Manual 5-spd
18mpg
4.3L 6-cyl · Rear-Wheel Drive
15 city21 hwy~$3,750/yr-1/10 Poor
Sonoma 2WD - Automatic 4-spd
17mpg
4.3L 6-cyl · Rear-Wheel Drive
15 city20 hwy~$3,950/yr-1/10 Poor
Sonoma 4WD - Manual 5-spd
17mpg
4.3L 6-cyl · 4-Wheel or All-Wheel Drive
15 city20 hwy~$3,950/yr-1/10 Poor
Sonoma 4WD - Automatic 4-spd
16mpg
4.3L 6-cyl · 4-Wheel or All-Wheel Drive
14 city19 hwy~$4,200/yr-1/10 Poor

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

Is the SLS Worth It?

Common questions about the 1999 GMC Sonoma SLS

How does the SLS compare to other GMC Sonoma trims?

The SLS occupies a distinct position in the GMC Sonoma range. See how it stacks up on the 1999 overview page.

What should I know about maintaining the 1999 GMC Sonoma SLS?

Budget for standard SLS maintenance plus any trim-specific items. The 1999 has 1 recall on file. Review the known issues on the model year page for areas to inspect before purchasing.

What are the best years for the GMC Sonoma SLS?

For the SLS, look at the price-to-mileage ratio across model years. Later model years before a redesign tend to be the most refined version of the platform. See the GMC Sonoma buyer's guide.

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