Symptoms:

  • TCC codes
  • Excess TCC slip
  • Cycling RPM
  • Low TCC release pressure
  • Flare shifts
  • Harsh shifts
  • Rough idle in Reverse
  • Overheated converter

Cause:

The bypass clutch control valve controls torque clutch apply and release pressure. As the bore wears, the apply rate of the clutch slows and the clutch release pressure will not vent.

Correction:

Ream the bore to restore tolerance and install the upgraded Sonnax oversized bypass clutch control valve kit.
  • 6R100, 6R60, 6R75, 6R80 (2009–2014), 6R80 (2015-Later), ZF6HP19, ZF6HP26, ZF6HP32 Oversized Bypass Clutch Control Valve Kit 95740-13K
  • 6R100, 6R60, 6R75, 6R80 (2009–2014), 6R80 (2015-Later), ZF6HP19, ZF6HP26, ZF6HP32 Oversized Bypass Clutch Control Valve Kit 95740-13K

You need this if...

Vacuum testing at the port(s) indicated fails to hold the recommended minimum in-Hg, or if wear is visually detected.

6R100, 6R60, 6R75, 6R80 (2009–2014), 6R80 (2015-Later), ZF6HP19, ZF6HP26, ZF6HP32 Oversized Bypass Clutch Control Valve Kit Vacuum Test Locations