Most common 2006 GMC Yukon Denali XL problems
Share of the 11 complaints; one complaint can involve more than one system. "~" is the median mileage when the problem started.
GMC Yukon Denali XL complaints by model year
Best Yukon Denali XL years: 2006, 2014, 2003. Years to avoid: 2011, 2015. Compare all years →
What 2006 GMC Yukon Denali XL owners say
Brakes
On January 21, 2014 I had wreck in my 2006 GMC Yukon that only had 31K on it hitting a 2011 Chevy cruze that was stopped at a red traffic signal; I tried to brake at speed of 45 however the brake pedal went to straight to the floor, due to complete brake line failure due to corroded brake lines. On December 13, 2013 I had just gotten a virginia state safety inspection.
Again, I am writing. I implore you to reinvestigation GMC for rusted brake lines. We replaced ours after they were so rusted, being a camping family, towing a trailer we could have all died. I understand that your office has investigated this and for whatever reason determined it was normal wear and tear but I think that your department is on overload and didn't want to handle another GM recall. GM and consumers know that the company got away with not issuing a recall. Yes, I am angry at the $800 we had to pay to repair this but I am more angry that after GM was contacted for reimbursement I got no where and they were snarky and admitted as much that they weren't made to be responsible. Again, I ask that you reopen this investigation on behalf of consumers. Afterall, if it was normal wear and tear and an industry wide problem why is it only GM cars. …
Stability & traction control
When taking off from a stop or at a slow speed the car stalls like its running out of gas, when that happens on the diagnostic center on the car reads "traction active", and then car behind me blows their horn telling me to move, then the car takes off. Its really scary when I'm in the middle of traffic in the intersection or trying to make a left turn and trying to go and it stalls. Sooner or later someone is going to run into the back of me or when I'm in the intersection I will be t-bone and someone is going to get killed or seriously injured. I took it to the GM repair center at art moran 9/10/2015 and they tell me there's nothing wrong. The service advisor reggie garrett ask if their was a certain time it would act like this and I told him it seems like when its hot outside is when I notice it. Then, the very next morning about a half mile into the drive it did the same thing. …
Intermittently, when my 2006 GMC Yukon Denali XL is at a stop light or sign and I am driving less than 10mph and I go to accelerate (not spinning the tires and not on wet or slippery surfaces) the "traction active" message displays and I lose all power for a couple of seconds. This many times has left me in the middle of an intersection with on-coming traffic. I have googled this traction active and there are many articles from other Yukon owners stating they have the exact same issue that I am having. I printed off 9 pages and took to my dealer/service department (simmons rockwell in bath, ny) and after looking at the vehicle, they said there was nothing wrong with it. I even supplied them with an ABS recall document id # 1819672 of which the subject is 'product safety ' front wheel speed sensor corrosion #05068b. …
Engine & cooling
When taking off from a stop or at a slow speed the car stalls like its running out of gas, when that happens on the diagnostic center on the car reads "traction active", and then car behind me blows their horn telling me to move, then the car takes off. Its really scary when I'm in the middle of traffic in the intersection or trying to make a left turn and trying to go and it stalls. Sooner or later someone is going to run into the back of me or when I'm in the intersection I will be t-bone and someone is going to get killed or seriously injured. I took it to the GM repair center at art moran 9/10/2015 and they tell me there's nothing wrong. The service advisor reggie garrett ask if their was a certain time it would act like this and I told him it seems like when its hot outside is when I notice it. Then, the very next morning about a half mile into the drive it did the same thing. …
Recently, my check engine light came on in my 2006 Yukon Denali XL w/ a 6.0 engine. The diagnostic test showed a gas cap problem. However, this did not fix the issue. Several weeks later, the engine started making what sounded like a clicking sound. Upon further investigation, it was discovered that there was a leak in the driver's side exhaust manifold. While in the shop, the mechanic discovered 2 bolts that were broken on the driver's side and it was found that one of the bolts on the passenger side is broken, but the passenger side exhaust manifold was not yet leaking. The auto shop was able to extract one of the bolts, but has found it impossible to remove the other on the driver's side without pulling the engine. This is a necessary repair because improper exhaust is a direct violation of epa standards. Furthermore, engine fires can result from this type of issue. …
Frequently asked questions
Is the 2006 GMC Yukon Denali XL a good car?
Based on 11 owner complaints filed with NHTSA, the 2006 Yukon Denali XL rates better than average: 74% fewer complaints than a typical year of the Yukon Denali XL at the same age. It is one of the best Yukon Denali XL years by this measure. Complaint counts don't account for sales volume or individual maintenance, so have any used car inspected before buying.
What is the most common problem with the 2006 GMC Yukon Denali XL?
The brakes — 5 complaints, 45% of all complaints for this model year. Next are the stability & traction control (3) and engine & cooling (3).
How many recalls does the 2006 GMC Yukon Denali XL have?
NHTSA lists no recalls for the 2006 GMC Yukon Denali XL. You can still confirm with your VIN using our VIN recall check.
What are the best and worst years of the GMC Yukon Denali XL?
The best years by complaints, compared at the same age, are 2006, 2014 and 2003. Years to avoid or approach with caution: 2011 and 2015. See the full GMC Yukon Denali XL years comparison.
At what mileage do 2006 GMC Yukon Denali XL problems happen?
The median mileage reported in complaints is about 102,000 miles; 11% of problems with a recorded mileage started before 50,000 miles.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.