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Problems for specific GMC Yukon XL Denali years:

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Most reported 2006 GMC Yukon XL Denali problems

 

Verified for the GMC Yukon XL Denali

One or more heater & AC (HVAC) temperature and/or air delivery mode door actuator may fail, resulting in improper temperature or air delivery. If this occurs, fault code(s) should be stored in the HVAC control module which should assist in diagnoses.

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Verified for the GMC Yukon XL Denali

The rear window defogger may stop working due to a wire terminal broken off of the rear glass. Our technicians tell us that terminal can be reattached using a special glue or silver solder.

22 Reports
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Verified for the GMC Yukon XL Denali

The steering wheel position sensor may fail, resulting in the service stability message being displayed.

17 Reports
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Verified for the GMC Yukon XL Denali

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.

16 Reports
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Verified for the GMC Yukon XL Denali

The daytime running lights are prone to burning out. Our technicians tell us that the light sockets may show signs of heat damage but usually are OK. Always be sure to use the correct replacement bulb for the best life expectancy. The new bulb recommendation for 2001-2003 models is #4114K (trade number).

15 Reports
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Verified for the GMC Yukon XL Denali

The steering may develop a clunk type noise from the upper intermediate steering shaft.  Our technicians tell us that you should check with you local GM dealer to find out what the latest repair is for this condition.

12 Reports
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Verified for the GMC Yukon XL Denali

Illumination of the Check Engine Light can be caused by a loose or worn gas cap.

10 Reports
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Verified for the GMC Yukon XL Denali

The muffler heat shield may become loose on the muffler causing a rattle or popping noise. Our technicians tell us there is a kit available from GM to correct this problem.

9 Reports
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Verified for the GMC Yukon XL Denali

A clicking noise may be noted from the turn signal flasher after the turn signals are switched off.  This is commonly cause by a faulty turn signal switch which will require replacement.

7 Reports
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Verified for the GMC Yukon XL Denali

A poor electrical ground under the battery tray may cause the ABS warning light to illuminate. Our technicians tell us that cleaning and properly securing this ground and also the main ABS ground on the frame rail below the drivers door may be necessary.

6 Reports
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Verified for the GMC Yukon XL Denali

Units with 4 wheel disk brakes may develop at situation where the park brake does not hold as it should. Our technicians tell us this can be caused by worn park brake shoes located inside the drum section of the rear brake disks. The worn shoes should be replaced and properly adjusted to correct this issue.

6 Reports
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Verified for the GMC Yukon XL Denali

The sunroof may stop working for various different reasons. Our technicians tell us it is often better to replace the complete sunroof assembly than to try and repair the old one.

6 Reports
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Verified for the GMC Yukon XL Denali

One or both secondary air injection check valves may become restricted causing poor air flow resulting in illumination of the Check Engine Light. It is often recommend to replace both check valves even if a fault code is set for only one bank of cylinders. Replacing only one valve may result in a return trip to the repair shop.

6 Reports
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Verified for the GMC Yukon XL Denali

The fuel pump may fail causing the engine to stall and not restart.

4 Reports
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