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2006 GMC Sierra Denali

Owner reports · Recalls · Investigations

Limited comparison data

There is not enough comparable history to draw a useful model-year comparison.

About this comparison →
5Owner complaints

Model-year median: 12

0Recall campaigns

View recall details →

0Investigations

View investigation details →

How this year compares

Owner complaints by model year

Other model years Selected year
11
20044
20055
20061
200718
20087
2009
Compare all Sierra Denali years →

Counts vary with age, sales and reporting. They are not failure rates.

What owners reported most

Fuel System, Gasoline
1Power Train
1Service Brakes
1Service Brakes, Hydraulic
1Steering
1

Tap a category to read its complaints. One report may name several components.

When problems were reported

Mileage at the reported incident

Limited mileage data: 4 of 5 reports include usable mileage. There isn’t enough coverage to show a useful chart.

NHTSA’s mileage field refers to the reported incident, not necessarily the filing date. This shows report counts, not the likelihood of a failure.

What to inspect

Issues worth paying extra attention to based on owner reports.

  • Fuel System, Gasoline. Review the 1 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Power Train. Review the 1 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Service Brakes. Review the 1 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →

NHTSA owner reports · September 18, 2026 snapshot.

1 crash reports0 fire reports0 injury reports

Service Brakes, Hydraulic complaints

1 reports
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78,300 miles · Dec 22, 2010
Service Brakes, HydraulicCrash

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. …

Read full complaint

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. TWO INDEPENDENT THIRD PARTIES HAVE SUGGESTED THIS COULD BE A MASTER CYLINDER ISSUE EVEN THOUGH GMC GAVE IT A CLEAN BILL OF HEALTH. *TR

NHTSA ODI #10372020

Official recalls

0

No recalls in this snapshot.

Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗

NHTSA investigations

0

No exact-year investigations in this snapshot.