GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2004 🢒 Blazer - 4WD 🢒 Transmission/Transaxle 🢒 Manual Transmission - NV 3500 🢒 Reverse Idler Gear Assembly

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
  2. Install the retaining ring on the short side of the shaft.

    3. The short side of the shaft is on the same end of the shaft as the chamfered gear.

  3. Install the thin flat washer.

    4. Object Number: 4835 Size: SH
  4. Install the wave washer.

    5. Object Number: 4834 Size: SH
  5. Install the locating ball.

    6. Object Number: 4833 Size: SH
  6. Install the thrust washer.

    7. Object Number: 4832 Size: SH
  7. Install the bearing assembly.

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

    9. Object Number: 4830 Size: SH
  9. Install the locating ball.

    10. Object Number: 4829 Size: SH
  10. Install the thrust washer.

    11. Object Number: 4828 Size: SH
  11. Install the retaining ring.

    12. Set the reverse idler gear assembly aside.