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GMC Sierra DenaliModel year report

2006 GMC Sierra Denali Problems

Complaints
5filed with NHTSA
Median mileage
61,000miles, 4 complaints with mileage
Recalls
0campaigns on record
Trend
Not enough dataFewer than 15 complaints, too few for a reliable trend.

Sources: NHTSA records for the 2006 GMC Sierra Denali (complaints, recalls, investigations). Report an error

NHTSA recorded 5 consumer complaints for the 2006 GMC Sierra Denali. The part named most often is brakes, with 2 complaints (40% of the total), followed by fuel system (1) and steering (1). 4 of the complaints include a mileage, and 25% of those were filed for vehicles with under 50,000 miles; the median is 61,000 miles. Of all complaints, 1 involved a crash, according to the filers. NHTSA lists 0 recall campaigns and 65 technical service bulletins for this model year. Brakes complaints overlap with 2 technical service bulletins filed under the same part.

This model year has fewer than 25 complaints on record, so the numbers below can change a lot with a few new reports.

Which parts are reported most

Complaints can name more than one part, so the counts add up to more than the total. Select a part to see its complaints, recalls and bulletins.

Example complaints

Brakes: “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

Fuel system: “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. …”

NHTSA complaint #10402929, filed 2011-05, 52,000 miles

Transmission and drivetrain: “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.”

NHTSA complaint #10455746, filed 2012-04, 34,650 miles

Mileage when problems were reported

25% of the 4 complaints with a mileage were filed for vehicles with under 50,000 miles; the middle half falls between 52,000 and 70,000 miles.

0%0–100%10–2525%25–5050%50–7525%75–1000%100–1500%150+
Share of complaints by mileage when the problem was reported, in thousands of miles (4 complaints with mileage). Red bars: under 50,000 miles. Bucket widths differ. Median: 61,000 miles.

Complaints by year filed

Fewer than 15 complaints, too few for a reliable trend.

2010120111201212013120151
Complaints by year the complaint was filed with NHTSA. Red bars: the last 3 full calendar years used for the trend. The current year (2026) is partial.

Recalls and investigations

NHTSA lists no recall campaigns for the 2006 GMC Sierra Denali in the data used here. A recall can apply to some vehicles of a model year and not others, so check a specific vehicle by VIN at nhtsa.gov/recalls.

Technical service bulletins

TSBs are manufacturer notes to dealers about known repair procedures. They are not recalls and do not by themselves mean a vehicle has a fault. 65 on record; the latest 10 are shown.

See all 65 bulletins →

Other model years of the GMC Sierra Denali

YearComplaintsMedian miRecallsCrash ★MPGScore (50 = typical)Trend
20201120,0000———Not enough data
2019265,2690——77 · MoreFalling
20181728,0000———Falling
20171560,0000———Falling
20163048,0000——50 · TypicalFalling
20152247,8000———Stable
20141459,4960———Not enough data
2013870,0000———Not enough data
20121050,0000———Not enough data
20112865,0000——0 · FewerFalling
20101045,2840———Not enough data
2009794,0000———Not enough data
20081858,0000———Stable
2006561,0000———Not enough data
20041144,0000———Not enough data
20021379,3150—12—Not enough data

All GMC Sierra Denali model years · Best and worst years by complaints

Frequently asked questions

How many NHTSA complaints does the 2006 GMC Sierra Denali have?

NHTSA recorded 5 consumer complaints for the 2006 GMC Sierra Denali as of Oct 30, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.

What part of the 2006 GMC Sierra Denali is reported most often?

Brakes is named most often, in 2 complaints (40% of the total), followed by fuel system with 1.

Has the 2006 GMC Sierra Denali been recalled?

NHTSA lists no recall campaigns for this model year in the data used here. To check a specific vehicle, enter its VIN at nhtsa.gov/recalls.

At what mileage are problems with the 2006 GMC Sierra Denali reported?

Among the 4 complaints that include a mileage, the median is 61,000 miles and the middle half falls between 52,000 and 70,000 miles; 25% were filed for vehicles with under 50,000 miles.

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 30, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.

Complaint counts come from NHTSA’s public complaint database; we count each complaint once. The source records for this vehicle are on nhtsa.gov. Scores and trends are our own summaries of that data, described in the methodology. This page is not legal, safety or repair advice: for a specific vehicle, check its VIN at nhtsa.gov/recalls and ask a qualified mechanic. See an error? Tell us.