Skip to content
Sonnax 77701-076 Transmission Servo Release Check Valve 4L60E 4L65E 4L70E

Sonnax 77701-076 Transmission Servo Release Check Valve 4L60E 4L65E 4L70E

by Sonnax
SKU S74480D
$10.67 - $10.67
$10.67
$10.67 - $10.67
$10.67
Availability:
in stock, ready to be shipped

Delivery time

You will receive your package in 2–5 business days within the contiguous U.S.

Brand: Sonnax

Other Part Number: S74480C

Type: Check Valve

Items Included: Servo Relaease Valve Kit

Manufacturer Part Number: 77701-076

Universal Fitment: Yes

Vintage Part: No

Performance Part: Yes

4L60, 4L60-E, 4L65-E, 4L70-E

Servo Release Check Valve Kit
Part No. 77701-076

2nd Gear Servo Release

Technicians would like to find a way to successfully extend the life of 3-4 clutches, and improve the 2-3 shift feel. They have been trying, with limited success, since the GM 4L60 (700-R4) and 4L60-E series transmissions were introduced. Inadequate metering of 2nd gear band servo release oil causes 3-4 clutch failure. The 3-4 clutch and 2nd gear band are not properly synchronized. Sonnax servo release check valve kit 77701-076 is a unique solution that combines an orifice with a ball check valve to resolve these problems.

  • Improved design meters servo release oil, reducing 3-4 clutch failure
  • Provides sufficient exhaust so that 3-2 downshifts are smooth
  • Calibrates 3-4 clutch feed orifice without creating shift concerns
  • O-Ring
  • Valve

Use this text to share information about your product.

Blog posts

See more