2006 Gmc Sierra 2500: Reliability Data

Source: NHTSA — 78 complaints
78
Total Complaints
42,000mi
Median Mileage
SERVICE BRAKES
Top Issue
4
Crash Reports

When Do Complaints Happen?

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

28,000 25th Percentile
42,000 Median Mileage
86,762 75th Percentile

What Fails?

Most reported component issues from NHTSA complaints.

SERVICE BRAKES
24
STEERING
7
POWER TRAIN:AUTOMATIC TRANSMISSION
5
TIRES
4
ENGINE AND ENGINE COOLING
4
POWER TRAIN:AUTOMATIC TRANSMISSION:COOLING UNIT AND LINES
4
ELECTRICAL SYSTEM
4
AIR BAGS
3
SERVICE BRAKES, HYDRAULIC
3
POWER TRAIN
2

Severity Assessment

4
Crashes
4
Fires
2
Injuries
0
Deaths

Sample Complaint Reports

"DT*: THE CONTACT STATED THREE OF THE FOUR ORIGINAL TIRES HAVE GONE FLAT BECAUSE THE VALVE STEMS LEAK AIR. THE VEHICLE WAS TAKEN TO THE DEALERSHIP AND THE VALVE STEMS WERE REPLACED. *AK"
"DT*: THE CONTACT STATED THE VEHICLE'S HYDROBOOST WAS TOO SMALL FOR THE TRUCK AND MADE TOO MUCH NOISE WHEN THE BRAKES OR STEERING WERE USED. THE DEALER DETERMINED THE VEHICLE HAS NO PROBLEMS, BUT THE CONTACT EXPRESSED THERE WILL BE DIFFICULTY DOING TOWING WORK PARTICULARLY GOING UPHILL AND DOWNHIL..."
"DT*: THE CONTACT STATED THE VEHICLE'S HYDROBOOST WAS TOO SMALL FOR THE TRUCK AND MADE TOO MUCH NOISE WHEN THE BRAKES OR STEERING WERE USED. THE DEALER DETERMINED THE VEHICLE HAS NO PROBLEMS, BUT THE CONTACT EXPRESSED THERE WILL BE DIFFICULTY DOING TOWING WORK PARTICULARLY GOING UPHILL AND DOWNHIL..."

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