Removal Procedure

Fig 1: Identifying Output Shaft Seal & Output Shaft Sleeve

Courtesy of GENERAL MOTORS CORP.

Inspect the internal transmission speed sensor rotor (699) for cracks or damaged teeth.
Inspect all splines on the output shaft (687) for cracks or damaged splines.
Remove the output shaft seal (691) and the output shaft sleeve (690) (model dependent) 2WD units only.

Fig 2: Using J 8433 & J 21427-01 To Remove Internal Speed Sensor Rotor

Courtesy of GENERAL MOTORS CORP.

If the internal speed sensor rotor (699) is damaged, replace it.
Using J 8433 with J 21427-01 , remove the internal speed sensor rotor (699) from the output shaft (687). See Special Tools .