Transmission Parts GM 4L70-E 200-4R 4L60 4L60-E 4L65-E Pump Pump Components
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Symptoms:

  • Erratic line pressure

Cause:

Weak pump slide spring.

Correction:

Increase pump output and stabilize line pressure by installing Sonnax pump spring spacer.

200-4R, 4L60, 4L60-E, 4L65-E, 4L70-E

Pump Spring Spacer
Part No. 77917-RV

Package Quantity: 10

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A common goal with GM 4L60-series transmissions is to increase pump volume or output, but a common problem is fluctuating pressure in Reverse. Sonnax pump spring spacer 77917-RV will preload the spring to increase pump output and stabilize the pressure.

  • Preloads the spring for increased pump output
  • Stabilizes pressure

Sonnax valve body layouts provide a detailed overview of individual units making it quick and easy to determine what’s available for the specific valve body you’re working on. See all Sonnax valve body layouts.

GM 200-4R Valve Body Layout

GM 200-4R Valve Body Layout

GM 4L60 (700-R4) Valve Body Layout

GM 4L60 (700-R4) Valve Body Layout

GM 4L60-E, 4L65-E, 4L70-E Valve Body Layout

GM 4L60-E, 4L65-E, 4L70-E Valve Body Layout
  • 200-4R, 4L60, 4L60-E, 4L65-E, 4L70-E Pump Spring Spacer 77917-RV
  • 200-4R, 4L60, 4L60-E, 4L65-E, 4L70-E Pump Spring Spacer 77917-RV
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