TCC Regulator Valve Kit Sonnax 4L80E 4L85E
Sonnax TCC Regulator Valve Kit for 4L80E and 4L85E Transmissions GM vehicles equipped with 4L80-E and 4L85-E transmissions may experience issues such as TCC shudder, burnt converter linings, TCC apply and release problems, and associated error codes. These issues are often due to significant pressure loss caused by excessive wear in the TCC regulator bore. The Sonnax TCC Regulator Valve Kit (part number 34994-01K) is designed to restore the hydraulic integrity of the TCC control circuit, ensuring reliable TCC operation. Key Features: Constructed from hardcoat anodized aluminum to resist premature wear. Extended critical spool length enhances stability and minimizes wear. Annular grooves help center the valve in the bore, reducing future side-load wear. Added chamfer improves apply characteristics and prevents shudder. Includes two springs: one for an OEM lockup feel, and another for a firmer-than-OE response. Quick and easy installation with drop-in Zip Valve™ components. Kit Contents: Valve Spring .420" O.D., Selective Scarf-Cut Seal Spring .300" O.D., Selective Transmissions: 4L85E (MN8) 1991-UP, 4L80E (MT1) 1991-UP Vehicle ASTON MARTINDB7 2000 4 SP RWD V6 3.2LBENTLEYARNAGE 2002-2006 4 SP RWD V8 6.8LCHEVROLETEXPRESS 2005-2016 4 SP RWD V8 6.6LSUBURBAN 2500 1996-2007 4 SP R/4WD V8 8.1LVAN FULL SIZE 2500 1996-2009 4 SP R/4WD V6 4.3L V8 4.8L 5.7L 6.0L 7.4L 8.1L 6.5L 6.6L DIESELVAN FULL SIZE 3500 1995-2009 4 SP RWD V6 4.3L V8 4.8L 5.7L 6.0L 7.4L 8.1L 6.5L 6.6L DIESELC/K, PICK-UP 1500, C/K, PICK-UP 2500 1995-2000 4 SP R/4WD V8 5.0L 5.3L 5.7L 6.0L 7.4L 6.5L DIESELEXPRESS 2002-2016 4 SP RWD V8 4.8L 6.0LSILVERADO 1500HD, SILVERADO 1500SS 1998-2007 4 SP R/4WD V8 6.0L 6.5LSILVERADO 2500, SILVERADO 3500 2001-2007 4 SP R/4WD V8 6.0LSILVERADO 2500HD 2001-2007 4 SP R/4WD V8 6.0LSUBURBAN 1500 1995-2008 4 SP R/4WD V8 6.0L 6.5L DIESEL 7.4LTAHOE 1995-2003 4 SP R/4WD V8 6.0L 8.1L 6.5L DIESELGMCYUKON XL 2000-2006 4 SP R/4WD V8 6.0L 8.1LSAVANA 2002-2016 4 SP RWD V8 4.8L 6.0L 6.6LSIERRA DENALI 1998-2007 4 SP R/4WD V8 6.0L 6.5LSIERRA 2500, SIERRA 3500 2001-2007 4 SP R/4WD V8 6.0LSIERRA 2500HD 2001-2007 4 SP R/4WD V8 6.0LISUZUTRUCK NPR, W4 1991-2008 4 SP RWD V8 5.7L 6.0LJAGUARXJ12/XJR/XJS 1994-1997 4 SP RWD L6 4.0L V12 6.0L Alternate Words: Automatic Transmission, Reprogramming, Improvement , Correction, Shift , Valve Body Rebuild Kit