Car Problem Reports

GMC Yukon XL Denali Stalling or Low Engine Idle Speed Due to Dirty Throttle Body

 
GMC Yukon XL Denali Problem
16 Reports
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Model Years Affected: 2001, 2002, 2003, 2004, 2005, 2006

Average Mileage: 122,560 mi (62,226 mi - 180,000 mi)

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A dirty throttle body may cause a lower than normal idle and possible stalling condition. Performing a throttle body service will commonly correct this concern.

  •  Rookie

    Truck idles really low, will stall sometimes when I make a slow turn

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  •  Rookie

    The vehicle would stall at idle. First thought it was an alternator problem since the alternator would drop to zero and the vehicle would stall. Put in new alternator. Same problem. Had throttle body cleaned by shop. Problem solved.

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  • Visitor, , 120,000 mi

    Engine nearly stalls, gets to low RPM's in idle and revs start to go up and down as if its stalling and then catching over and over. Then it'll catch on and be back to normal for about a minute and goes back to the stalling.

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  • Visitor, , 180,000 mi

    2002 yukon denali stalls at low speeds on turn or backing up, lights would dim, low rpm. cleaned throttle body as described, that took about 15 minutes, now runs like new. power steering pump must have had such a pull on the engine it would stall. i agree should be routine maintenance. thank you forum.

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  • Visitor, , 120,000 mi

    Regular maintenance (cleaning) of the throttle body is mandatory on the 6.0l engine.

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