Sonata GL V6-2.5L (1999)
Wheel Bearing: Customer Interest
Front Wheel Bearing - Humming Noise
Group: CHASSIS
Number: 99-50-004
Date: APRIL, 1999
Model: 1999 SONATA
Subject
1999 SONATA FRONT WHEEL BEARING NOISE
DESCRIPTION:
Some 1999 Sonata vehicles produced through January 8, 1999, may emit a noise from the front wheel bearings. This noise may be characterized as a
humming tire noise similar to snow tires. The noise is generally loudest at a slow to medium road speed (30 to 50 MPH), and can usually be isolated to
the right or left front wheel bearing during the vehicle road test as follows:
Road test the vehicle on a smooth road at medium speed (about 40 MPH) at part throttle. Changing engine speed or throttle position should have no
effect on the noise.
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It the vehicle makes noise during right turns, the left front wheel bearing may need to be replaced.
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If the vehicle makes noise during the left turns, the right front wheel bearing may need to be replaced.
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If the front wheel bearing noise is heard on either right, left or straight ahead, the front wheel bearing assembly on the side with the most noise should
be replaced.
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This condition may be confirmed with the vehicle on a hoist using a mechanics stethoscope.
Vehicles produced after January 8, 1999, have been assembled with a new specification wheel bearing grease.
REPAIR PROCEDURE:
Replace the incident front wheel bearing per the procedure outlined in the 1999 Sonata Shop Manual.
PARTS INFORMATION:
NOTE:
When repairing the front wheel bearing, the Snap ring must be replaced.
WARRANTY INFORMATION
