2003 Gmc Sierra: Reliability Data

Source: NHTSA — 246 complaints
246
Total Complaints
51,000mi
Median Mileage
SERVICE BRAKES
Top Issue
16
Crash Reports

When Do Complaints Happen?

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

19,000 25th Percentile
51,000 Median Mileage
92,000 75th Percentile

What Fails?

Most reported component issues from NHTSA complaints.

SERVICE BRAKES
45
ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL
19
SERVICE BRAKES, HYDRAULIC
17
POWER TRAIN:AUTOMATIC TRANSMISSION
15
STEERING
14
SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP
11
VEHICLE SPEED CONTROL
10
ELECTRICAL SYSTEM
8
STEERING:COLUMN
6
ENGINE AND ENGINE COOLING:ENGINE
5

Severity Assessment

16
Crashes
3
Fires
11
Injuries
2
Deaths

Sample Complaint Reports

"THE HIGH-BEAM INDICATOR LIGHT (BLUE) IS EXTREMELY BRIGHT AND IS SO AIMED AS TO SHINE DIRECTLY INTO THE EYES OF THE DRIVER. THIS CAUSES A SIGNIFICANT DISTRACTION DUE TO THE LIGHT SHINING DIRECTLY AT THE LEFT EYE AND ALSO GREATLY REDUCES THE VISIBILITY THROUGH THE WINDSHIELD DUE TO THE ADDITIONAL LIG..."
"THE PASSENGER SEAT DOES NOT ALLOW CONSUMER TO RIDE WITH THE AIRBAG ON. YOU HAVE TO BE 120LBS OR OVER BEFORE THE AIRBAG WORK PROPERLY. PH"
"THE VEHICLE SHIFTED INTO 4 LOW WITHOUT WARNING. *JB"

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