2003 Gmc Sonoma: Reliability Data

Source: NHTSA — 53 complaints
53
Total Complaints
44,119mi
Median Mileage
SERVICE BRAKES, HYDRAULIC
Top Issue
3
Crash Reports

When Do Complaints Happen?

Distribution of NHTSA complaints by vehicle mileage at time of report.

14,375 25th Percentile
44,119 Median Mileage
73,496 75th Percentile

What Fails?

Most reported component issues from NHTSA complaints.

SERVICE BRAKES, HYDRAULIC
3
LATCHES/LOCKS/LINKAGES:DOORS:LATCH
3
EQUIPMENT
3
POWER TRAIN:DRIVELINE:DIFFERENTIAL UNIT
3
VEHICLE SPEED CONTROL
2
STRUCTURE
2
SEATS
2
LATCHES/LOCKS/LINKAGES
2
PARKING BRAKE:CONVENTIONAL:MECHANICAL:LINKAGE AND CABLE
2
TIRES:TEMPORARY/EMERGENCY SPARE TIRE
2

Severity Assessment

3
Crashes
1
Fires
3
Injuries
0
Deaths

Sample Complaint Reports

"WHILE TRAVELING ON THE HIGHWAY ENGINE CHECK LIGHT APPEARED ON THE DASHBOARD. *AK THE VEHICLE WAS TOWED TO THE DEALERSHIP ON THREE OCCASIONS AND WAS TOLD THE PROBLEM WAS POSSIBLY THE WIRING HARNESS *TS *JB"
"CONSUMER WILL PROVIDE INFORMATION ON THIS STRUCTURE COMPLAINT.*AK"
"FUEL FILLER NECK REGULARLY ALLOWS GASOLINE TO OVERFLOW WHILE FILLING THE GAS TANK. I HAVE TAKEN THE VEHICLE TO THE DEALER TWICE AND CONTACTED THE MANUFACTURER. GENERAL MOTORS AND THE DEALER TOLD ME THERE IS NOTHING THAT CAN BE DONE. THE FUEL FILLER NECK HAS BEEN NARROWED TO COMPLY WITH EMISSION STA..."

Source: NHTSA ODI Complaints Database. Names and identifying details omitted.

Data source: View this vehicle on NHTSA.gov | NHTSA ODI Complaints Database. Public domain.

Methodology: Complaint counts and mileage distributions are computed directly from consumer-reported NHTSA complaints. This data represents reported issues, not failure rates — vehicles without complaints are not represented. Full methodology.

Data through: 2026-03-28