Rear Axle ABS Sensor Ring - Replacement

90chevy27
Number: 91-66-4B

Section: 4B

Date: September 1990

Corp. Bulletin No.: 034201

Subject: REAR AXLE ABS SENSOR RING REPLACEMENT


Model and Year: 1991 CAPRICE

FIGURE 1:

TO: ALL CHEVROLET DEALERS

When servicing the rear axle drive pinion, it may be necessary to remove the ABS sensor ring which may effect the original press fit dimensions and tolerances. This could result in false speed signals due to sensor ring slippage. (See Figure 1)

FIGURE 2:

TABLE 1:

In order to maintain original press fit dimensions and tolerances whenever the sensor ring is removed, a new sensor ring must be installed.

Identify the rear axle in question by locating the axle code stamped on the axle tube (See Figure 2). Using the obtained axle code, cross reference for the appropriate replacement sensor ring part number (See Table 1).

Reference Section 4B of the Service Manual for removal and installation procedures. Also, note in the Service Manual that additional information is available referencing this Service Bulletin.

Parts are currently available from GMSPO.

Use applicable labor code and time. (F2383)