Symptoms:

  • TCC codes
  • TCC slip
  • No lockup
  • Harsh TCC apply
  • Soft TCC apply

Cause:

TCC regulated apply valve bore wear can cause the apply valve to stick in the apply or release positions, resulting in the TCC not applying or soft or harsh TCC applies.

Correction:

Install this TCC regulated apply valve sleeve by oversizing the OE bore with the drill and reamer kit.

4T40-E, 4T45-E

TCC Regulated Apply Valve Sleeve
Part No. 33000-02


You need this if... View Instructions Find a Distributor

In vehicles with GM 4T40-E and 4T45-E transmissions, it is common to have either soft or slipping TCC apply or no TCC apply at all. These symptoms are commonly caused by the TCC regulated apply valve wearing out the bore and allowing the valve to stick. Sonnax TCC regulated apply sleeve valve 33000-02 addresses these complaints.

  • Sleeve is installed using the original OE valve, allowing the bore to be restored, and eliminating sticking
  • Sleeve is made from high-quality aluminum to resist wear and increase longevity
  • 4T40-E, 4T45-E TCC Regulated Apply Valve Sleeve 33000-02
  • 4T40-E, 4T45-E TCC Regulated Apply Valve Sleeve 33000-02

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.

4T40-E, 4T45-E TCC Regulated Apply Valve Sleeve Vacuum Test Locations