GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2004 🢒 TrailBlazer - 2WD 🢒 Transmission/Transaxle 🢒 Automatic Transmission - 4L60-E/4L65-E 🢒 Internal Transmission Speed Sensor Rotor Replacement

Tools Required

    • J 8433 Two Jaw Puller
    • J 21427-A Speedometer Gear Puller Adapter
    • J 36352 Speed Sensor Rotor Installer Kit

Removal Procedure

    Object Number: 5470 Size: SH
  1. Inspect the internal transmission speed sensor rotor (699) for cracks or damaged teeth.
  2. Inspect all splines on the output shaft (687) for cracks or damaged splines.
  3. Remove the output shaft seal (691) and the output shaft sleeve (690) (model dependent) 2WD units only.

    4. Object Number: 5471 Size: SH
  4. If the internal speed sensor rotor (699) is damaged, replace it.
  5. Using J 8433 with J 21427-01 , remove the internal speed sensor rotor (699) from the output shaft (687).

Installation Procedure

    Object Number: 5472 Size: SH

    Important: Do not re-use an internal speed sensor rotor that has been removed.

  1. Slip a new internal speed sensor rotor (699) over the output shaft splines.
  2. Install the J 36352-4 in the groove on the output shaft (687).
  3. Place the J 36352-6 on the output shaft (687). Press on the J 36352-6 until it contacts the J 36352-4 in the window (the J 36352-4 will be a positive stop for the J 36352-6 ).