2003 Chevrolet Avalanche 1500: Reliability Data

Source: NHTSA — 212 complaints
212
Total Complaints
90,000mi
Median Mileage
ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL
Top Issue
9
Crash Reports

When Do Complaints Happen?

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

62,098 25th Percentile
90,000 Median Mileage
120,750 75th Percentile

What Fails?

Most reported component issues from NHTSA complaints.

ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL
47
ELECTRICAL SYSTEM
38
SERVICE BRAKES
28
SERVICE BRAKES, HYDRAULIC
19
AIR BAGS
12
VEHICLE SPEED CONTROL
11
STEERING
8
UNKNOWN OR OTHER
7
STRUCTURE:BODY
5
TIRES
3

Severity Assessment

9
Crashes
3
Fires
4
Injuries
0
Deaths

Sample Complaint Reports

"PURCHASED A USED 2003 CHEVY AVALANCHE AT A DEALERSHIP IN FEB 2006 UPON SERVICING THE VEHICLE TWO MONTHS LATER WAS TOLD THAT THE CAR HAD EXTENSIVE UNDER CARRIAGE RUST. THIS CAR ORIGINATED IN MICHIGAN BUT I AM WONDERING IF IT WAS A KATRINA VEHICLE DURING AUCTION? RECENTLY HAD PROBLEMS WITH U-JOINTS WH..."
"PURCHASED A USED 2003 CHEVY AVALANCHE AT A DEALERSHIP IN FEB 2006 UPON SERVICING THE VEHICLE TWO MONTHS LATER WAS TOLD THAT THE CAR HAD EXTENSIVE UNDER CARRIAGE RUST. THIS CAR ORIGINATED IN MICHIGAN BUT I AM WONDERING IF IT WAS A KATRINA VEHICLE DURING AUCTION? RECENTLY HAD PROBLEMS WITH U-JOINTS WH..."
"PURCHASED A USED 2003 CHEVY AVALANCHE AT A DEALERSHIP IN FEB 2006 UPON SERVICING THE VEHICLE TWO MONTHS LATER WAS TOLD THAT THE CAR HAD EXTENSIVE UNDER CARRIAGE RUST. THIS CAR ORIGINATED IN MICHIGAN BUT I AM WONDERING IF IT WAS A KATRINA VEHICLE DURING AUCTION? RECENTLY HAD PROBLEMS WITH U-JOINTS WH..."

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