I own an 03 Denali and have had some problems. The latest, which has lasted 18 months, thanks to an incompetent dealer (Toth Akron, Ohio) is a Traction Active message read out on the display. This happens when accelerating - usually from a stop sign. When the vehicle shifts from first to second gear the vehicle pulls up lame, motionless and leaves you a sitting duck in the middle of an intersection. TOTH GMC looked at my Denali three times and had no clue as to what was wrong. I finally felt I wasted enough time with them and went to another dealer. They knew it was a stabilitrak problem, spent some time diagnosing the problem and found the wheel sensors had carosion and were not reading properly. It was a $468 repair, but at least my $50,000 vehicle now makes it through ab intersection safely. I am due for a new vehicle next year. I want to buy another Denali but I couldn't get 50,000 miles out of this vehicle without spending major cash on repairs. I also had to have my front diff rebuilt. GM is doing everything they can to keep me away. I am thinking about going Infinti or Lexas and saving myself the service headaches and expenses.
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