Model year guide

1999 GMC Sonoma

Recalls, most-reported problems, crash-test ratings, fuel economy and what a 1999 GMC Sonoma is worth — from official NHTSA and EPA data. 1 on record.

1999 GMC Sonoma at a glance

Safety recalls1
Owner complaints83
Combined16–23 mpg

Free: that car's specs and build sheet, model-year recall campaigns and a fair price.

1999 GMC Sonoma recalls 1

Fuel System, Other:storage:tank Assembly:pressure Relief Devices NHTSA Campaign #07E021000 · 12/03/2007

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.

Fix: DELPHI WILL NOTIFY OWNERS AND REPLACE THE UPR FREE OF CHARGE. THE RECALL BEGAN ON APRIL 23, 2007. OWNERS CAN CONTACT DELPHI AT 877-411-8770.

Source: U.S. NHTSA. A campaign covers the model year; to see whether a particular car still needs the repair, check its VIN on NHTSA.gov or ask a franchised dealer.

1999 GMC Sonoma common problems

Owners have filed 83 complaints with NHTSA. These are the most-reported areas in a sample of the most recent — and what to check before you buy.

Structure
Inspect for rust, fresh undercoating, mismatched paint, uneven panel gaps and any sign of prior collision or frame repair.
Air Bags
Confirm the airbag light turns on then off at startup — if it stays lit there's a fault (costly, and a safety risk). Check for signs of prior deployment.
Service Brakes
Brakes should feel firm and quiet — no grinding, pulsing or pulling. Check for an ABS light and uneven pad/rotor wear.
Engine And Engine Cooling
Check coolant level and color, look for leaks, and confirm the engine reaches normal temperature without overheating.
Electrical System
Test every electrical feature: windows, locks, infotainment, charging and all lights. Watch for flickering, dead accessories or warning lights.
Fuel System
Sniff for fuel odor, check for leaks, hard starts or stalling, and confirm the fuel gauge reads correctly.

1999 GMC Sonoma MPG & running costs

Combined16–23 mpg
City16 mpg
Highway22 mpg
Est. annual fuel cost$3,708
EPA size classSmall Pickup Trucks 2WD
TransmissionAutomatic 4-spd or Manual 5-spd
5-yr fuel cost vs average new car$6,542 more

Source: U.S. EPA / DOE fueleconomy.gov. The EPA lists 6 versions of this model year; combined is shown as a range and the other figures are averages.

Estimated 5-year cost to own

A rough guide to what running a 1999 GMC Sonoma costs over five years and 75,000 miles.

Fuel (5 yrs)$18,540
Fuel only$18,540
Per mile$0.25

How this is estimated: fuel is the U.S. EPA annual cost at 15,000 miles a year. There aren't enough comparable listings to estimate depreciation for this model, so it is left out. Not included: insurance, maintenance, repairs, taxes, registration and finance costs. Treat it as a comparison guide, not a quote.

1999 GMC Sonoma trims & engines on record

Trims
SLE
Engines
4.3L 6-cyl

1999 GMC Sonoma vehicles on record

1999 GMC Sonoma SLE1GTCT19X8X8523529

Other GMC Sonoma model years

2004 2003 2002 2001 2000 1998 1997 1996 1995 1994

1999 GMC Sonoma — frequently asked questions

Does the 1999 GMC Sonoma have any safety recalls?

NHTSA lists 1 recall campaign for the 1999 GMC Sonoma. Whether an individual car still needs a recall repair depends on its VIN — check it on NHTSA.gov or ask a franchised dealer. Recall repairs are free.

What are the most common problems with the 1999 GMC Sonoma?

Owners have filed 83 complaints with NHTSA; in a sample of the most recent, the most-reported problem areas are structure, air bags, service brakes.

What gas mileage does the 1999 GMC Sonoma get?

The 1999 GMC Sonoma has U.S. EPA estimates of 16–23 mpg combined, depending on engine and trim (6 versions).

Sources: NHTSA (recalls, complaints, crash tests), U.S. EPA (fuel economy). Vehicle data only — CarLogs never shows owner information.