Symptoms:

  • Code 628
  • TCC slip
  • No lockup
  • Soft TCC apply
  • No TCC release during coast
  • Excess cooler circuit oil loss

Cause:

Excess wear at the bypass clutch control sleeve allows regulated converter charge and cooler oil leakage.

Correction:

Sonnax drop-in bypass TCC control plunger valve kit restores hydraulic and eliminated cooler/lube oil loss.
  • AX4S, AXODE Bypass TCC Control Plunger Valve Kit 96206-01K
  • AX4S, AXODE Bypass TCC Control Plunger Valve Kit 96206-01K