Sierra Classic 3500 4WD V8-8.1L (2007)
Accumulator: Service and Repair
4L60-E/4L65-E/4L70-E - Automatic Transmission
Accumulator Assembly, Spacer Plate, and Gaskets
Tools Required
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J 25025-B Dial Indicator Post and Guide Pin Set
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J 36850 Transjel Lubricant
Removal Procedure
1. Remove the transmission filter. Refer to Automatic Transmission Fluid and Filter Replacement.
2. Important:
The 1-2 accumulator can be removed without removing the valve body.
Remove the valve body. Refer to Valve Body and Pressure Switch Replacement.
3. Remove the accumulator cover bolts.
4. Remove the 1-2 accumulator cover.
5. Important:
regular production option (RPO) M33 transmissions do not use a 1-2 accumulator spring inner (104).
Remove the 1-2 accumulator cover (57) and pin.
6. Disassemble the 1-2 accumulator assembly (54, 56, 57, 104).
7. Inspect the 1-2 accumulator springs for cracks.