Safari Van 2WD V6-4.3L VIN X (2003)
Wheel Speed Sensor: All Technical Service Bulletins
ABS - Revised Wheel Speed Sensor Replacement
File In Section: 05 - Brakes
Bulletin No.: 04-05-25-009
Date: September, 2004
SERVICE MANUAL UPDATE
Subject:
Revised Wheel Speed Sensor Replacement
Models:
2003-2004 Chevrolet Astro Van
2003-2004 GMC Safari Van
This bulletin is being issued to revise the Wheel Speed Sensor Replacement in the Antilock Brake System sub-section of the Service Manual. Please
replace the current information in the Service Manual with the following information.
The following information has been updated within SI.
If you are using a paper version of this Service Manual, please make a reference to this bulletin on the affected page.
The following information has been incorporated into the Installation steps of the Wheel Speed Sensor Replacement procedure; it does not replace that
procedure.
The proper installation of the wheel speed sensor (WSS) is critical to prevent corrosion from beneath the sensor. When installing a new WSS, the
mounting surface must be free from any rust of corrosion. It is recommended that once the sensor is removed, the WSS bore should be plugged to
prevent debris from falling into the hub. Once the WSS bore is plugged, a wire brush or equivalent should be used to clean the WSS mounting surface on
the hub. After the mounting surface is free from all corrosion, apply a thin layer of wheel bearing lubricant, GM P/N 01051344 (in Canada, 993037) to
the hub surface and the sensor 0-ring prior to installation.
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