Symptoms:

  • TCC codes
  • Converter shudder & failure
  • TCC slip
  • Low TCC apply pressure
  • Low TCC release pressure
  • Overheated fluid & TCC lining

Cause:

Wear at TCC pressure control plunger valve and sleeve assembly allows critical TCC switch oil to exhaust.

Correction:

Recover hydraulic control and renew TCC performance by installing drop-in Sonnax TCC pressure control plunger valve kit.
  • A6GF1, A6LF1/2/3, A6MF1/2 TCC Pressure Control Plunger Valve Kit 102741-01K
  • A6GF1, A6LF1/2/3, A6MF1/2 TCC Pressure Control Plunger Valve Kit 102741-01K

You need this if...

Excessive wear can often be visually identified by shiny patches on the inside diameter of sleeve. Wear can also be determined by vacuum testing, done through feed hole in OE sleeve. Using a small tip (available in Sonnax vacuum test stand kit VACTEST-01K) attached to the line, apply vacuum to one of the feed holes while covering the hole on the opposite side. Be certain OE plunger valve is installed in sleeve while checking.

If sleeve fails to hold at least 18 in-Hg, install this kit.

A6GF1, A6LF1/2/3, A6MF1/2 TCC Pressure Control Plunger Valve Kit Vacuum Test Locations