Most common 2003 GMC Yukon Denali XL problems
Share of the 32 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 2003 GMC Yukon Denali XL owners say
Brakes
A dog ran out in front of me I applied my brakes and the pedal went to the floor had it checked at bale Chevrolet in little rock ark. Wanted to charge me 6800.00 to repair had it towed back to il. Where I live that cost was 500.00 besides 200 miles that was covered by aaa I,m a 62 yr old woman had my grandchildren with me in little rock ark this experience was the scariest time in my lifetime no warning just all of a sudden no brakes in the worst traffic ever. The money spent on this trip was very expensive not to mention the stress.
The stability control warning has come on several times on my vehicle. The brakes do not work, as you have to push all the way to the floor and sometimes it takes time before the vehicle stops. I have had brake lines repairs and the problem still is there. We cannot use vehicle until the issue is resolved. Our mechanic advised us to file a complaint on this issue because it is an active issue with GMC Denali Yukon's for years. We need assistance to have this resolved to use our vehicle.
Engine & cooling
Vehicle powers down without any pattern, rhyme or reason. It will do it at 5 MPH, and at 55 MPH, when driven a lot, and when not. Reduced engine power light turns on, vehicle suddenly slows to 25 MPH max, steering becomes hard, brakes too. Then will totally shut off immediately. I have replaced the battery, throttle body assembly and wiring harness twice. Fuses, fuel pump and filters, oil, and everything else as recommended. It put me in the ditch. It stranded me in the center of a freeway in winter. When it sits for a while, it resets, only to do it again. T/c light turns on also. I found out that I can manually reset the reduced engine power for a few moments (to get out of the center of the road) by turning the ignition switch on and off very fast. It is a extreme safety hazard! I haven't driven it in months due to absolute fear for my life. …
When driving at low speeds (less than 10 miles per hour) or starting from a stop, the traction control will automatically engage when the gas pedal is applied. When the traction control engages, a total loss of input to the engine results and the vehicle does not move (it essentially stalls). I was almost struck in an intersection while waiting to make a left turn on a green light in early December of 2011. I was stopped in the middle of the intersection waiting to turn left. When I attempted to turn left, I gave the gas pedal some input, the traction control engaged, and my vehicle stopped because there was no engine input and was almost hit by an on-coming car. Luckily, this had happened before and I knew to either floor the gas pedal or to let off the gas entirely and then floor it again to get the traction control to disengage and get power to the engine. …
Stability & traction control
The stability control warning has come on several times on my vehicle. The brakes do not work, as you have to push all the way to the floor and sometimes it takes time before the vehicle stops. I have had brake lines repairs and the problem still is there. We cannot use vehicle until the issue is resolved. Our mechanic advised us to file a complaint on this issue because it is an active issue with GMC Denali Yukon's for years. We need assistance to have this resolved to use our vehicle.
There is no warning code for the hydraulic brake booster when it starts to go bad that shows up on the ABS/odb scanner. You will be driving and all of the sudden your steering gets stiff, the brake pedal is hard to press and you can't stop as good as your used to in the vehicle. This issue can cause accidents if someone stops suddenly in front of you.
Frequently asked questions
Is the 2003 GMC Yukon Denali XL a good car?
Based on 32 owner complaints filed with NHTSA, the 2003 Yukon Denali XL rates better than average: 48% 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 2003 GMC Yukon Denali XL?
The brakes — 16 complaints, 50% of all complaints for this model year. Next are the engine & cooling (9) and stability & traction control (9).
How many recalls does the 2003 GMC Yukon Denali XL have?
NHTSA lists no recalls for the 2003 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 2003 GMC Yukon Denali XL problems happen?
The median mileage reported in complaints is about 130,000 miles; 3% 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.