K 1500 Yukon Denali AWD V8-6.0L VIN U (2002)
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If the sensor mounting surface is NOT flat (1), the sensor must be replaced. Proceed to the next step and replace the sensor.
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If the sensor mounting surface IS flat (2), the sensor IS to be reused. Proceed to Step 16.
12.
Remove the wheel speed harness mounting clips from the knuckle (4) upper control arm (3) and frame (2).
13.
Disconnect the wheel speed sensor electrical connector (1) from the vehicle wiring harness.
14.
Connect the new wheel speed sensor harness electrical connector to the vehicle wiring harness.
15.
Attach the wheel speed sensor harness to the frame, upper control arm, and the knuckle.
16.
Temporarily plug the wheel speed sensor hole (1) in the bearing hub to prevent debris from entering it when you clean it.
Important:
All rust and corrosion must be removed from the wheel speed sensor mounting surfaces on the bearing hub in the next step.
17.
Using a wire brush, sandpaper, emery cloth, scotch brite, or equivalent, thoroughly clean the wheel speed sensor mounting surface (2) on the
bearing hub to remove any rust of corrosion.
18.
Using compressed air, remove all debris from the bearing hub surface.
19.
Using a clean shop towel, clean the sensor and the 0-ring.
Important:
While the corrosion is drying in the next step, begin performing Steps 3-20 on the opposite side front wheel speed sensor.
20.
Apply (spray) two thin coats of the specified rust penetrating lubricant (corrosion inhibitor) listed in this bulletin, to the complete sensor mounting
surface on the bearing hub. Allow to dry for 3-5 minutes between coats.
21.
When the corrosion inhibitor is dry to the touch (about 10 minutes), apply a light coating of the specified grease to the complete sensor mounting
surface on the bearing hub and to the sensor and 0-ring.
22.
Remove the temporary plug from the hole in the bearing hub.
23.
Install the wheel speed sensor in the bearing hub and install the bolt. Ensure that the sensor is seated flat against the hub.
Tighten
Tighten the wheel speed sensor mounting bolt to 18 Nm (13 lb-ft).
24.
Disconnect the front wheel speed sensor connector and place a digital volt meter (DVM) across the terminals of the wheel speed sensor connector.
Rotate the bearing at approximately one revolution per second. The minimum reading should be at least 350 ACmVs. If the reading is less than
