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Problems for specific GMC Yukon Denali years:

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Most reported 1999 GMC Yukon Denali problems

 

Verified for the GMC Yukon Denali

The upper dash may crack, most commonly on vehicles in warm climates and exposed to a lot of sunlight. The common repair is to replace the upper instrument trim panel. Information on a technical service bulletin or extended warranty is not available at this time.

88 Reports
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A Loose or worn gas cap may cause Check Engine Light to illuminate.

27 Reports
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Verified for the GMC Yukon Denali

The inside and outside door handles are prone to breaking.

20 Reports
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Verified for the GMC Yukon Denali

The power door lock actuators may become slow to operate or stop working completely and require replacement.

9 Reports
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Verified for the GMC Yukon 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.

9 Reports
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Verified for the GMC Yukon Denali

The fuel pump may fail causing the engine to stall and not restart. Our technicians recommend replacing the fuel filter every 30,000 miles to help prevent undue strain on the fuel pump.

8 Reports
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Verified for the GMC Yukon 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.

6 Reports
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Verified for the GMC Yukon Denali

Power brake systems using "hydro-boost" may leak power steering fluid from the hydro-boost unit located behind the brake master cylinder. Replacement of the hydro-boost unit is the common repair to correct this concern.

6 Reports
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Verified for the GMC Yukon Denali

The quick-connect fittings for the heater hoses tend to leak engine coolant. This problem commonly occurs because the metal housing has become brittle, which can break and cause leaks.

6 Reports
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Verified for the GMC Yukon Denali

The windshield wipers may not work intermittently due to a faulty wiper motor control board. Our technicians tell us that lightly taping on the wiper motor when the fault occurs should temporarily get the wipers working again. Some vehicles were recalled for this problem and some were not. You will need to check with your local dealer to find out if a specific vehicle was included.

5 Reports
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Verified for the GMC Yukon Denali

The front or rear differential may develop an abnormal noise due to worn bearings or another internal fault. Our technicians tell us that a complete overhaul of the affected differential is commonly necessary to correct this condition.

5 Reports
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Verified for the GMC Yukon Denali

The anti-lock brake system (ABS) front wheel speed sensors are prone to failure. When a sensor fails, the ABS warning light may illuminate and/or the ABS system may activate erratically.

4 Reports
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Verified for the GMC Yukon Denali

One or more fuel injectors may become stuck closed causing an engine misfire  and the Check Engine Light to illuminate. Our technicians tell us that this problem can be caused by some fuel additives. There are special procedures which may be able to restore the affected injector. If this fails the affected injector must be replaced.

3 Reports
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Verified for the GMC Yukon Denali

The intake manifold gasket may develop and external engine oil or coolant leak. In some cases, an internal coolant leak may occur causing coolant to mix with the engine oil. Running the engine with a coolant/oil mix may result in engine damage. Replacing the intake manifold gasket should correct this issue.

3 Reports
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Verified for the GMC Yukon Denali

The alternator may fail causing the battery to go dead. The charge light on the dash may or may not illuminate. The alternator may also develop an abnormal noise. A failed alternator will require replacement.

3 Reports
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