GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 1996 🢒 Blazer - 2WD 🢒 Transmission/Transaxle 🢒 Automatic Transmission - 4L60-E 🢒 Vehicle Speed Sensor and Case Extension Installation

Tools Required

J 21426 Rear Seal Installer


    Object Number: 7769 Size: SH
  1. Install an output shaft sleeve and an output shaft seal.

    2. Do not push the sleeve past the machined surface on the output shaft.


    Object Number: 13158 Size: SH
  2. Install the case extension to case seal and the case extension.
  3. Install the case extension to case bolts.

    4. Tighten
    Tighten the bolts to 35 N·m (26 lb ft).


    Object Number: 7772 Size: SH
  4. Inspect the internal transmission speed sensor for the following defects:
    5. • Cracks
    • Nicks
    • Damage

    Object Number: 7773 Size: SH
  5. Install the internal transmission speed sensor.

    6. Tighten
    Tighten the bolt to 11 N·m (8 lb ft).


    Object Number: 13159 Size: SH
  6. Install the case extension oil seal assembly.