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

Vacuum Test Plate Kit

Part No.


Vacuum Test Plate Kit
  • Vacuum Test Plate Kit


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

Vacuum Test Plate Kit

Part No. 77754-VTP

  • Plate
  • Seal
  • Push Pins (10)
  • Alignment Pins (2)
  • Bolts (3)
  • Washers (3)
  • Wing Nuts (3)

A worn valve or valve body bore can result in incorrect pressures in the transmission, which may lead to poor performance or failure of the transmission. With the proper equipment, vacuum testing is an efficient way to determine if a valve/bore is worn or to verify if a valve repair was performed correctly. It’s an easy diagnostic technique that yields repeatable, numerical results for comparison and documentation.

Sonnax vacuum test plate kit 77754-VTP for GM 4L60-E, 4L65-E and 4L70-E units is an ideal tool for fast, easy testing. The plate and seal fit securely over the entire valve body casting to seal all the critical valve body passages at once. Strategically located test ports and exhaust holes allow all key casting areas to be vacuum tested quickly by just moving the vacuum test tip.

  • Clear test plate and silicone pad seal casting for quick, easy testing
  • Open ports at key areas identify recommended test locations
  • Easy-to-follow instruction booklet identifies ports, valves, symptoms of wear and the right Sonnax parts for repair
  • Patent Pending

Click here to view PDF if instructions do not appear below.

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How to Vacuum Test Video - Part 3 of 3

Vacuum test 5R55W/S and 4L60-E valve bodies with Sonnax Tech Specialist Jim Dial who demonstrates the basics of this easy and effective technique for diagnosing problem transmissions. Topics in this third video of an introductory video series include:

  • Proper usage of Sonnax vacuum test stand kit components.
  • Matching common transmission symptoms to problem areas in the valve body.
  • The benefits of Sonnax vacuum test guides.
  • Establishing pass/fail standards aligned with customer’s needs and shop warranty requirements.

Vacuum Test Stand Setup & Calibration Video - Part 2 of 3

Sonnax Tech Specialist Jim Dial demonstrates proper setup and calibration of the Sonnax vacuum test stand kit, an essential tool any transmission shop can use to quickly and easily diagnose many valve body problems. In this second video of a three-part introductory series on valve body vacuum testing, you'll learn:

  • The basic equipment necessary for vacuum testing
  • How to set up the Sonnax test stand kit.
  • How to calibrate the test stand before beginning to vacuum test.

What is Vacuum Testing Video - Part 1 of 3

Valve body vacuum testing is a quick and easy process that yields repeatable, accurate results. The first in a three-part series, this video features Sonnax Tech Specialist Jim Dial answering some of the big questions like:

  • What are the benefits of vacuum testing?
  • How does valve body wear lead to transmission problems?
  • What does vacuum testing tell you about a valve body?
  • How to get started vacuum testing.

Read about vacuum testing in Russian or Spanish:

Читать о вакумном тестировании на русском.

Lea sobre la prueba a de vacío en español

Contact a Sonnax Distributor to purchase this part.