Total Complaints
5 filings
GMC SIERRA DENALI · model year
5 NHTSA complaints, 1 crash report, and 1 active recall for this specific cohort.
NHTSA overall rating
Not crash-tested
New Car Assessment Program
The 2006GMCSIERRA DENALI carries 5 consumer safety complaints in NHTSA's Office of Defects Investigation database for this specific model-year cohort. Within that volume, owners reported 1 crash, 0 fires, 0 injuries, and 0 fatalities. No NCAP 5-star crash-test rating is available for this model year in the federal database.
Component-level analysis is where model-year complaints become actionable: the top complaint category for the 2006 SIERRA DENALI is service brakes, hydraulic with 1 filings, followed by fuel system, gasoline (1) and power train (1). Concentration in one or two component groups is the classic signature of a systemic defect; a flat distribution usually reflects normal aging, warranty complaints, or isolated build-plant variability. This model year has 1 active recall campaign, which means the manufacturer is obligated to remedy the covered defect at no charge for the life of the vehicle — the full NHTSA campaign numbers are listed below.
NHTSA currently has 2 investigation files overlapping the 2006 SIERRA DENALI. Owners comparing this cohort against neighboring years should pair the counters above with the complaint-by-year trend on the parent model page — a spike in a single year often tracks to a platform refresh, a new transmission supplier, or an updated ECU calibration. Use the related-complaint feed below to read raw owner narratives before deciding whether any pattern here affects your specific use case.
Total Complaints
5 filings
Crashes Reported
1 reports
Source
NHTSA ODI
Federal complaints database
At or below the fleet median complaint volume.
| Component | Count |
|---|---|
| SERVICE BRAKES, HYDRAULIC | 1 |
| FUEL SYSTEM, GASOLINE | 1 |
| POWER TRAIN | 1 |
| SERVICE BRAKES | 1 |
| STEERING | 1 |
FUEL SYSTEM, GASOLINE
CERTAIN REPLACEMENT FUEL FILTERS, FRAM BRAND NAME P/N G3727, WITH DATE CODES X52911 THROUGH X60801 SEQUENTIALLY OR X600141 AND A MEXICO COUNTRY OR ORIGIN MARKING ON THE FUEL FILTER HOUSING MANUFACTURED FROM OCTOBER 18, 2005, THROUGH MARCH 21, 2006, SOLD FOR USE ON THE VEHICLES LISTED ABOVE AND ON CE
THE VIN NUMBER IS COMING UP AS A 2006 GMC SAVANNA ON YOUR SITE SAFECAR.GOV UNDER RECALL LOOKUP BY VIN. IT SHOULD BE 2006 GMC SIERRA DENALI 1500 TRUCK.I WOULD LIKE IT CORRECTED IF POSSIBLE SO I CAN SEE CURRENT RECALLS. THANK YOU *TR
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
Mileage: 70,000
FRONT DIFFERENTIAL VIBRATION/NOISE AT 47-70 MPH. INTERNAL BEARINGS REPLACED DUE TO SIGNIFICANT METAL FOUND ON MAGNETIC DRAIN PLUG. TECHNICIAN STATEMENT "BEARINGS COMING APART" STATED. IDENTICAL COMPLAINT WITH IDENTICAL REPAIR REPEATED 4 TIMES WITHIN 85,000 MILES. FIRST REPAIR OCCURRED AT 34,000 MILES. LATEST (4TH) PERFORMED AT 85,919 MILES. *JS
Mileage: 34,650
TL* THE CONTACT OWNS A 2006 GMC SIERRA DENALI. THE CONTACT STATED THAT THE CHECK ENGINE LIGHT ILLUMINATED ON THE INSTRUMENT PANEL WHILE DRIVING APPROXIMATELY 45 MPH. THE VEHICLE WAS TAKEN TO AN INDEPENDENT REPAIR SHOP WHERE THE CONTACT WAS INFORMED THAT THE FUEL SYSTEM NEEDED TO BE REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE AND THE CONTACT WAS INFORMED THAT THE VEHICLE WAS NOT INCLUDED IN THE RECALL ASSOCIATED WITH NHTSA CAMPAIGN ID NUMBER: 06E043000 (FUEL SYSTEM, GASOLINE). THE VEHICLE WAS NOT REPAIRED. THE FAILURE MILEAGE WAS 52,000 AND THE CURRENT MILEAGE WAS 77,000. THE VIN WAS UNAVAILABLE.
Mileage: 52,000
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
Mileage: 78,300
Data as of 2025. Sources: NHTSA Office of Defects Investigation (ODI) complaints database, NHTSA recall campaign API, NHTSA NCAP crash-test ratings, and NHTSA FARS for fatality cross-reference.
Read our methodology — how this data is sourced, computed, and verified.