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
Included: that car's specs and build sheet, model-year recall campaigns and a fair price.
1999 GMC Sonoma recalls 1
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, checked 4 Nov 2026. 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
The most-reported problem areas across all 83 owner complaints filed with NHTSA — and what to check before you buy.
1999 GMC Sonoma safety ratings
Source: NHTSA 5-Star Safety Ratings (NCAP), tested as the 1999 GMC Sonoma Extended Cab. Ratings can differ by body style and drivetrain.
1999 GMC Sonoma MPG & running costs
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.
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.
Dimensions & weight
Manufacturer-reported figures for the 1999 GMC Sonoma — ranges cover the 12 body / drivetrain versions on record. Source: Transport Canada vehicle specifications via NHTSA.
Investigations & service bulletins
Manufacturer service bulletins 112
Technical notes the manufacturer sent to dealers about known issues and fixes. Useful to mention to a mechanic — they are not recalls and repairs may not be covered. Showing the 10 most recent of 112.
This Preliminary Information communication provides information to the technician about vehicles that may have slack in one of the tailgate cables. Technician should not replace any parts for this concern. Please communicate to the customer this condition is a…
Bulletin PIT3227S · Structure · May 2023This warranty administration bulletin provides information regarding the field action courtesy transportation policy.
Bulletin 17-NA-073 · Equipment · Feb 2023This Preliminary Information communication provides information to the technician about vehicles that may have slack in one of the tailgate cables. Technician should not replace any parts for this concern. Please communicate to the customer this condition is a…
Bulletin PIT3227R · Structure · Apr 2022This Preliminary Information communicates to the dealer the process for downloading or updating operating software for the Tire Pressure Monitor, Active Fuel Injector tester, multi media tester, PICO Scope, GR8 starting/charging tester and Vehicle Data Record…
Bulletin PIP4723F · Service Brakes, Hydraulic, Fuel System, Gasoline · Jan 2022This Preliminary Information communication provides information to the technician about vehicles that may have slack in one of the tailgate cables. Technician should not replace any parts for this concern. Please communicate to the customer this condition is a…
Bulletin PIT3227Q · Equipment · Apr 2021This Preliminary Information communicates to the dealer the process for downloading or updating operating software for the Tire Pressure Monitor, Active Fuel Injector tester, multi media tester, PICO Scope, GR8 starting/charging tester and Vehicle Data Record…
Bulletin PIP4723D · Electrical System · Jan 2020This Preliminary Information communication provides information to the technician on how to unlock radios that are Delco TheftLock. Technician will use the radio to get the scrambled code. Technician will need to contact the radio unlock center to retrieve the…
Bulletin PIC4696E · Equipment · Nov 2019This warranty administration bulletin provides information regarding the field action courtesy transportation policy.
Bulletin 17NA073 · Equipment · Sep 2019This Preliminary Information communication provides information to the technician on how to unlock radios that are Delco TheftLock. Technician will use the radio to get the scrambled code. Technician will need to contact the radio unlock center to retrieve the…
Bulletin PIC4696D · Equipment · Sep 2019This warranty administration bulletin provides information regarding the field action courtesy transportation policy.
Bulletin 17NA073 · Equipment · Feb 2019Source: NHTSA Office of Defects Investigation, listed for the SONOMA. Model-year data, not specific to one car.
Canadian recalls 1
Transport Canada recall campaigns for the 1999 GMC Sonoma. Relevant if the car was first sold in, or imported from, Canada.
Electrical
Certain vehicles: Light duty trucks. passenger vehicles and sport utility vehicles. Certain vehicles do not comply with the requirements of C.M.V.S.S. NO. 118, "POWER-OPERATED WINDOW, PARTITION & ROOF PANEL SYSTEMS." When the hazard flasher switch is used to turn the hazard flashers on or off, the retained accessory power (RAP) feature can be activated without a key in the igni…
Transport Canada #2001263 · Nov 2001Source: Transport Canada Motor Vehicle Safety Recalls Database.
About the GMC Sonoma
The Chevrolet S-10 is a compact pickup truck produced by Chevrolet. It was the first domestically-built compact pickup of the big three American automakers. When it was first introduced as a "quarter-ton pickup" in 1981 for the 1982 model year, the GMC version was known as the S-15 and later renamed the GMC Sonoma. A high-performance version of the latter was released in 1991, called "Syclone". The pickup was also sold by Isuzu as the Hombre from 1996 through 2000, but only in North America. There was also an SUV version, the Chevrolet S-10 Blazer/GMC S-15 Jimmy. An electric version was leased as a fleet vehicle in 1997 and 1998. These models are sometimes internally referred to as the S/T s…
From Wikipedia, licensed CC BY-SA 4.0. Describes the model line in general, not this model year specifically.