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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 complaints

1 reports
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70,000 miles · Nov 12, 2013
Service Brakes

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 …

Read full complaint

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. I HAVE RESEARCHED ALOT ON THESE PROBLEMS AND IT SEEMS LIKE NO ONE IS HOLDING GM RESPONSIBLE AND MAKING THEM FIX THE CORROSION PROBLEM.I THINK THEY SHOULD HAVE TO FIX THE PROBLEM LIKE TOYOTA DID WHEN THEY HAD FRAME PROBLEMS SO THAT THEY CAN STOP PRODUCING VEHICLES THAT DONT LAST 10 YEARS WITHOUT ROTTING AWAY. *TR

NHTSA ODI #10551852

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.