GM Service Manual Online
For 1990-2009 cars only

Reverse Idler Gear Disassemble


    Object Number: 626190  Size: SH
  1. Remove the retaining ring (1) on the opposite end of the wave washer (6).
  2. Remove the thrust washer (3).
  3. Remove the locating ball (2).
  4. Remove the reverse idler gear (4).
  5. Remove the bearing assembly (5).
  6. Remove the other locating ball (2).
  7. Remove the other thrust washer (3).
  8. Remove the wave washer (6).
  9. Remove the other retaining ring (8).

Reverse Idler Shaft Assemble


    Object Number: 548111  Size: SH
  1. Lubricate all the reverse idler gear parts with Synchromesh Transmission Fluid GM P/N 12345349 (Canadian P/N 10953465) or equivalent.
  2. Assemble the reverse idler gear using the following procedure:


    Object Number: 4836  Size: SH
  3. Install the retaining ring on the short side of the shaft.
  4. The short side of the shaft is on the same end of the shaft as the chamfered gear.

  5. Install the thin flat washer.

  6. Object Number: 4835  Size: SH
  7. Install the wave washer.

  8. Object Number: 4834  Size: SH
  9. Install the locating ball.

  10. Object Number: 4833  Size: SH
  11. Install the thrust washer.

  12. Object Number: 4832  Size: SH
  13. Install the bearing assembly.

  14. Object Number: 4831  Size: SH
  15. Install the reverse Idler gear.

  16. Object Number: 4830  Size: SH
  17. Install the locating ball.

  18. Object Number: 4829  Size: SH
  19. Install the thrust washer.

  20. Object Number: 4828  Size: SH
  21. Install the retaining ring.
  22. Set the reverse idler gear assembly aside.