2003 Chevrolet Avalanche: Reliability Data
When Do Complaints Happen?
Distribution of NHTSA complaints by vehicle mileage at time of report.
What Fails?
Most reported component issues from NHTSA complaints.
Severity Assessment
Sample Complaint Reports
"THE PASSENGER FRONT RIGHT TIRE EXPERIENCED TREAD SEPARATION.*JB"
"THE POSITION AND DESIGN OF THE PARKING BRAKES COULD CAUSE SERIOUS INJURIES TO THE DRIVERS LOWER LEFT LEG IF THE VEHICLE WAS IN AN FRONTAL COLLISION. *NLM *CB *JB"
"WHEN THE CONSUMER APPLIED THE BRAKES THE PEDAL WENT DOWN TO THE FLOOR AND THERE WERE NO BRAKES. THIS FORCED THE DRIVER TO PULL OFF THE ROAD. *NLM RETURNED USPS, 2ND ATTEMPT MADE 10/16/07 FAILED . *LJ"
Source: NHTSA ODI Complaints Database. Names and identifying details omitted.
When Were Complaints Filed?
Number of complaints by the year the issue occurred.
When Does Each Component Fail?
Median mileage at complaint for top components.
Where Are Complaints Coming From?
Top states by complaint count.
Who Files Complaints?
Chevrolet Avalanche — Other Years
See how this model compares across different model years.
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
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