GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2009 🢒 Avalanche - 4WD 🢒 Transmission 🢒 Automatic Transmission - 4L60-E/4L65-E/4L70-E 🢒 1-2 Accumulator Assemble

    Object Number: 1730070 Size: SH
  1. Inspect the 1-2 accumulator piston (56) for the following conditions:
    2. • Porosity
    • Cracks
    • Scoring
    • Nicks and Scratches
  2. Install a 1-2 accumulator piston oil seal ring (55) on the 1-2 accumulator piston (56).

    3. Object Number: 828121 Size: SH
  3. Inspect the 1-2 accumulator housing for the following conditions:
    4. • Porosity
    • Cracks
    • Scoring
    • Nicks and Scratches
    • Debris or blocked passages

    Object Number: 1755949 Size: SH

    Important: Some models may not use an outer 1-2 accumulator spring (54).

  4. Install the 1-2 inner (104) and outer (54) accumulator springs.
  5. Install the 1-2 accumulator piston (56).