OE Part No. 3830235, 3815914, 3830235View Instructions
The servo return spring is the source of many "mystery" band failures caused by inconsistent servo release and weak springs prone to collapse. Sonnax race-calibrated servo return spring kit 28133-HD for Powerglide units ensures optimum servo function in high gear for longer band life, cooler transmission and tunability of shift.
Designed to overcome the pin bias effect, the Sonnax race-calibrated spring has higher seat pressure to help ensure full servo release, but with a lower rate for greater net apply force.Watch this video to see exactly how the servo performs at high pressures when fitted with an OE, light aftermarket or Sonnax race-calibrated spring.
April 27, 2016
Topics: Diagnostics And Theory Transmission GM Powerglide TransmissionRead Now
April 26, 2016
Topics: Diagnostics And Theory Transmission GM Powerglide TransmissionWatch Now
Contact a Sonnax Parts Distributor.