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BrakesPart report

2006 GMC Sierra Denali Brakes Problems

Complaints
2about this part
Share
40%of 5 total for the year
Median mileage
74,150miles
Trend
Not enough dataFewer than 15 complaints, too few for a reliable trend.

NHTSA recorded 2 complaints about the brakes of the 2006 GMC Sierra Denali, 40% of the 5 complaints for this model year. Where a mileage was given, the median is 74,150 miles. 1 of these say a crash was involved, according to the filers.

Fewer than 15 complaints name this part, so treat the figures as a rough indication only.

Example complaints

Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.

“2006 Sierra Denali with just over 75,000 miles. With 1/2 block warning and only traveling at a speed of 20mph, I was unable to come to a complete stop. The brake pedal was all of the way to the floor when I ran into a van in the intersection. I felt very little resistance from the pedal and the ABS definitely did not go off. There was no snow or ice on the road surface. However after towing the vehicle to the local dealership, I was told nothing was wrong with the truck. …”

NHTSA complaint #10372020, filed 2010-12, 78,300 miles

“I bought a 2006 Sierra Denali with 65000 miles on the truck in may of 2013. I lost my brakes and almost rearended a man pulling into his driveway. I also had my 3 kids and my fiance in the truck with me. I took my truck to robertsons Gmc in wareham,ma and they told me my brake lines were completely rotted as well as my frame. I also had a extended warranty which did not cover it because it was a pre-existing problem. I just don't understand how GM can get away with all of these frame corrosion and brake line corrosion problems without having to fix the problems with there trucks. …”

NHTSA complaint #10551852, filed 2013-11, 70,000 miles

Related service bulletins

Brakes: other model years

YearComplaintsShare of year
2020218%
2019831%
2018424%
2016827%
2015732%
2014429%
2012220%
200816%
2006240%
2004545%
20021077%

Other parts of the 2006 GMC Sierra Denali

Fuel system
1 complaints
Steering
1 complaints
Transmission and drivetrain
1 complaints

← All problems reported for the 2006 GMC Sierra Denali

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 31, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.

To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology