2003 Chevrolet Suburban 2500: 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
"WITHOUT PRIOR WARNING, THE TRANSFER CASE STARTED SWITCHING FROM 2 HI TO 4 HI AND 2 LO AT HIGHWAY SPEEDS AND BY ITSELF. THIS IS EXTREMELY DANGEROUS AS IT CAN RESULT IS A SUDDEN LOST OF CONTROL. *JB"
"WHEN STARTING THE VEHICLE THE OIL IS OUT OF THE VALVES CAUSING IT TO SOUND LIKE A DIESEL MOTOR. THEREFORE NEEDING TO LEAVE THE VEHICLE RUNNING FOR AT LEAST 15 MINUTES BEFORE YOU SHOULD PUT IT INTO GEAR. *TR"
"SPEEDOMETER FAILURE AT 52000 ON 2003 SUBURBAN 2500. SPEEDOMETER SHOWS BETWEEN 70 AND 120 MPH. *CN"
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.
Chevrolet Suburban 2500 — 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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