GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2008 🢒 Sierra - 2WD 🢒 Transmission/Transaxle 🢒 Automatic Transmission - 4L60-E/4L65-E/4L70-E 🢒 Oil Pump Cover Assemble

Tools Required

    • J 38735-3 Pusher
    • J 39855 Stator Shaft Seal Installer

    Object Number: 1552963 Size: SH
  1. Using the J 39855-1 (1) which is part of kit J 39855 and the J 38735-3  (3), install the stator shaft oil seal rings (230).
  2. Place J 39855-2 (2) which is part of kit J 39855 over the seals.

  3. Leave J 39855-2 (2) which is part of kit J 39855 on the stator shaft until just before the pump is to be installed into the transmission.


    Object Number: 1730055 Size: SH
  4. Install the pressure relief ball (228) and pressure relief spring (229).
  5. Install the pressure relief bolt rivet (227).
  6. Install the oil pump cover screen seal (231) on the oil pump cover screen (232).
  7. Install the oil pump cover screen (232) into the pump cover.

    8. Object Number: 1552952 Size: SH
  8. Install the converter clutch valve spring (246).
  9. Install the converter clutch valve (224).
  10. Install the stop valve (223) and the oil pump converter clutch valve retaining ring (222).

    11. Object Number: 1552951 Size: SH
  11. Install the pressure regulator valve (216).
  12. Install the pressure regulator isolator spring (218) and the pressure regulator valve spring (217).
  13. Install the reverse boost valve (219) in the reverse boost valve sleeve (220).
  14. Install the reverse boost valve and sleeve in the pump cover.
  15. Install the oil pump reverse boost valve retaining ring (221).