Sonnax 1-2 accumulator piston 4l60e 700r4 Harsh 1-2 Shift

* COMPLETE VIDEO WITH CROSSHATCH EXPLAINED: 4L60E 700R4 Hard 1-2 Shift FIX 1-2 Ac...

Link: Sonnax 4L60 4L60E 4L65-E & 4L70-E Pinless Accumulator Piston Kit https://www.amazon.com/dp/B00BCN9Z5A/...

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Other upgrades I did:
Transmission filter kit
3-2 Downshift solenoid
Manifold pressure switch
TCC/PWM solenoid
Shift solenoid A and B
Pressure control solenoid
Piston accumulator 1-2
Piston accumulator spring
Synthetic transmission fluid