Complaints
78
Crashes
6
Fires
3
Injuries
5
Fatalities
—
Recalls
0
Worst 1999 GMC Sonoma Problems
Top 3 most-reported issues with average mileage at failure.
#16 complaints
Seats:Front Assembly:Recliner
Avg mileage:55,000 mi
#24 complaints
Air Bags:Frontal
Crash-related:4
#34 complaints
Automatic Transmission
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All Problems by Category
Every NHTSA complaint category for the 1999 GMC Sonoma.
| Component | Complaints | Crashes | Fires | Avg Mileage | Volume |
|---|---|---|---|---|---|
| Seats:Front Assembly:Recliner | 6 | — | — | 55,000 mi | |
| Air Bags:Frontal | 4 | 4 | — | — | |
| Automatic Transmission | 4 | — | — | — | |
| Service Brakes, Hydraulic:Antilock/Traction Control/Electronic Limited Slip | 4 | 1 | 1 | — | |
| Structure:Body:Tailgate:Hinge And Attachments | 4 | — | — | — | |
| Gasoline Fuel System | 3 | — | — | — | |
| Unintended Acceleration | 3 | — | — | — | |
| Airbags | 2 | 1 | — | — | |
| Engine & Cooling | 2 | — | — | — | |
| Exterior Lighting:Headlights | 2 | — | — | — | |
| Seat Belts:Front:Retractor | 2 | — | — | — | |
| Seat-Related Issues | 2 | — | — | — | |
| Brakes | 2 | — | — | — | |
| Service Brakes, Hydraulic:Foundation Components:Disc:Pads | 2 | — | — | — | |
| Structure:Body:Bumpers | 2 | — | — | — | |
| Electrical Faults | 1 | — | — | — | |
| Electrical System:Ignition:Module | 1 | — | — | — | |
| Electrical System:Wiring:Front Underhood | 1 | — | 1 | — | |
| Wiring & Fuses | 1 | — | — | — | |
| Engine And Engine Cooling:Cooling System | 1 | — | — | — | |
| Engine And Engine Cooling:Engine:Gasoline | 1 | — | 1 | — | |
| Equipment:Electrical:Radio/Tape Deck/Cd Etc. | 1 | — | — | — | |
| Exterior Lighting:Turn Signal:Switch | 1 | — | — | — | |
| Transmission / Drivetrain | 1 | — | — | — | |
| Power Train:Axle Assembly:Axle Shaft | 1 | — | — | — | |
| Power Train:Clutch Assembly | 1 | — | — | — | |
| Power Train:Driveline:Differential Unit | 1 | — | — | — | |
| Seat Belts:Front:Anchorage | 1 | — | — | — | |
| Seats:Front Assembly:Power Adjust | 1 | — | — | — |
Seats:Front Assembly:Recliner
6
complaints
Crashes
—
Fires
—
Avg Miles
55,000
Air Bags:Frontal
4
complaints
Crashes
4
Fires
—
Avg Miles
—
Automatic Transmission
4
complaints
Crashes
—
Fires
—
Avg Miles
—
Service Brakes, Hydraulic:Antilock/Traction Control/Electronic Limited Slip
4
complaints
Crashes
1
Fires
1
Avg Miles
—
Structure:Body:Tailgate:Hinge And Attachments
4
complaints
Crashes
—
Fires
—
Avg Miles
—
Gasoline Fuel System
3
complaints
Crashes
—
Fires
—
Avg Miles
—
Unintended Acceleration
3
complaints
Crashes
—
Fires
—
Avg Miles
—
Airbags
2
complaints
Crashes
1
Fires
—
Avg Miles
—
Engine & Cooling
2
complaints
Crashes
—
Fires
—
Avg Miles
—
Exterior Lighting:Headlights
2
complaints
Crashes
—
Fires
—
Avg Miles
—
Seat Belts:Front:Retractor
2
complaints
Crashes
—
Fires
—
Avg Miles
—
Seat-Related Issues
2
complaints
Crashes
—
Fires
—
Avg Miles
—
Brakes
2
complaints
Crashes
—
Fires
—
Avg Miles
—
Service Brakes, Hydraulic:Foundation Components:Disc:Pads
2
complaints
Crashes
—
Fires
—
Avg Miles
—
Structure:Body:Bumpers
2
complaints
Crashes
—
Fires
—
Avg Miles
—
Electrical Faults
1
complaints
Crashes
—
Fires
—
Avg Miles
—
Electrical System:Ignition:Module
1
complaints
Crashes
—
Fires
—
Avg Miles
—
Electrical System:Wiring:Front Underhood
1
complaints
Crashes
—
Fires
1
Avg Miles
—
Wiring & Fuses
1
complaints
Crashes
—
Fires
—
Avg Miles
—
Engine And Engine Cooling:Cooling System
1
complaints
Crashes
—
Fires
—
Avg Miles
—
Engine And Engine Cooling:Engine:Gasoline
1
complaints
Crashes
—
Fires
1
Avg Miles
—
Equipment:Electrical:Radio/Tape Deck/Cd Etc.
1
complaints
Crashes
—
Fires
—
Avg Miles
—
Exterior Lighting:Turn Signal:Switch
1
complaints
Crashes
—
Fires
—
Avg Miles
—
Transmission / Drivetrain
1
complaints
Crashes
—
Fires
—
Avg Miles
—
Power Train:Axle Assembly:Axle Shaft
1
complaints
Crashes
—
Fires
—
Avg Miles
—
Power Train:Clutch Assembly
1
complaints
Crashes
—
Fires
—
Avg Miles
—
Power Train:Driveline:Differential Unit
1
complaints
Crashes
—
Fires
—
Avg Miles
—
Seat Belts:Front:Anchorage
1
complaints
Crashes
—
Fires
—
Avg Miles
—
Seats:Front Assembly:Power Adjust
1
complaints
Crashes
—
Fires
—
Avg Miles
—
Search Owner Complaints
Read what owners actually reported to NHTSA for the 1999 GMC Sonoma. Type a keyword (e.g. “transmission”, “stalling”, “brakes”) to filter.
Other GMC Sonoma Years
1999 GMC Sonoma — FAQ
Answers based on real NHTSA complaint and recall data for this specific model year.
Is the 1999 GMC Sonoma reliable?
Verdict: Typical for Model. The 1999 GMC Sonoma has 78 NHTSA complaints, 6 crash-related, and 0 recall campaigns. The most common issue is Seats:Front Assembly:Recliner with 6 complaints. Source: NHTSA via VinItel.
What are common problems with the 1999 GMC Sonoma?
Top reported problems: Seats:Front Assembly:Recliner (6 complaints, avg 55,000 mi); Air Bags:Frontal (4 complaints); Automatic Transmission (4 complaints). Every complaint is filed by an owner with NHTSA — this is raw reported data, not editorial opinion.
At what mileage do problems start on the 1999 GMC Sonoma?
The weighted average mileage at time of complaint is about 55,000 miles. Some components fail earlier, some later — check the "All Problems by Category" table above for per-issue averages.
How safe is the 1999 GMC Sonoma?
NHTSA complaints for the 1999 GMC Sonoma include 6 crash-related reports, 3 fire reports, 5 injuries, and 0 fatalities. These are owner-reported incidents, not official crash-test ratings — a complaint being filed doesn't confirm a defect, but clusters around specific components are worth investigating.
Does the 1999 GMC Sonoma have any recalls?
No NHTSA recall campaigns have been issued for the 1999 GMC Sonoma as of the latest data sync. Verify by VIN for the most current status — new recalls can be issued years after a model year ships.
Should I buy a 1999 GMC Sonoma?
Complaint levels are in line with what's expected. Normal used-car due diligence applies — check the specific VIN for accident history, open recalls, and title brands.
Source: NHTSA (National Highway Traffic Safety Administration) complaint and recall databases, aggregated by VinItel.
Wider context: See the full GMC Sonoma reliability report with year-by-year comparison and generation analysis.
Check Your Specific 1999 GMC Sonoma
Real owner complaints tell you about the model. The VIN tells you about your specific car — accidents, title issues, odometer fraud.
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