GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2009 🢒 TrailBlazer - 4WD 🢒 Transmission 🢒 Automatic Transmission - 4L60-E/4L65-E/4L70-E 🢒 Control Valve Body Disassemble

    Warning: Refer to Valve Springs Can Be Tightly Compressed Warning in the Preface section.


    Object Number: 2035544 Size: SH
  1. Remove the manual valve (340).

    2. Object Number: 13239 Size: SH
  2. Remove the forward accumulator cover bolts (364) and the forward accumulator cover (363).
  3. Remove the forward accumulator spring (356), forward accumulator piston (354), and the forward accumulator pin (355).
  4. Remove the low overrun valve spring (362) and the low overrun valve (361).
  5. Remove the coiled spring pin (360) and the bore plug (359).
  6. Remove the forward abuse valve spring (358) and the forward abuse valve (357).

    7. Object Number: 405071 Size: SH
  7. Remove the solenoid retainer (395) and the 1-2 shift solenoid (367A).
  8. Remove the 1-2 shift valve (366) and the 1-2 shift valve spring (365).

    9. Object Number: 405074 Size: SH
  9. Remove the solenoid retainer (395) and the 2-3 shift solenoid (367B).
  10. Remove the 2-3 shuttle valve (369) and the 2-3 shift valve (368).

    11. Object Number: 13144 Size: SH
  11. Remove the coiled spring pin (360).
  12. Remove the 1-2 accumulator valve sleeve (372).
  13. Remove the 1-2 accumulator valve (371) and the 1-2 accumulator valve spring (370).

    14. Object Number: 2041450 Size: SH
  14. Remove the solenoid retainer bolt (364A) and the solenoid retainer (378). Remove the pressure control solenoid (377), note orientation upon removal.
  15. Compress the actuator feed limit valve spring (375).
  16. Remove the bore plug retainer (395) and release the spring slowly.
  17. Remove the bore plug (376).
  18. Remove the actuator feed limit valve spring (375) and the actuator feed limit valve (374).

    19. Object Number: 405086 Size: SH
  19. Remove the bore plug retainer (395) and the bore plug (381).
  20. Remove the 3-2 downshift valve spring (390) and the 3-2 downshift valve (389).
  21. Remove the coiled spring pin (360) and the bore plug (359).
  22. Remove the reverse abuse valve spring (388) and the reverse abuse valve (387).

    23. Object Number: 405092 Size: SH
  23. Remove the bore plug retainer (395) and the bore plug (381).
  24. Remove the 3-4 shift valve spring (386) and the 3-4 shift valve (385).

    25. Object Number: 736214 Size: SH
  25. Remove the bore plug retainer (395) and the bore plug (381).
  26. Remove the regulator apply valve (380) and the regulator apply spring (397) and the isolator valve (398).

    27. Object Number: 405094 Size: SH
  27. Remove the bore plug retainer (395) and the bore plug (381).
  28. Remove the 3-4 relay valve (384) and the 4-3 sequence valve (383) and the 4-3 sequence valve spring (382).