Superseded Part Number: S34741CK, 34994-01K
Interchange Part Number: S34741CK, 34994-01K
UPC: Does not apply
Other Part Number: S34741CK, 34994-01K
Fitment Type: Direct Replacement
Manufacturer Part Number: S34741CK, 34994-01K
Brand: Sonnax
Hello, If you need assistance finding a part please supply the VIN number of your NORTH AMERICAN vehicle AND the part number you are looking for.4L80-E, 4L85-E
TCC Regulator Valve Kit
Part No. 34994-01K
GM vehicles equipped with 4L80-E and 4L85-E transmissions may exhibit problems such as TCC shudder, burnt converter linings, TCC apply and release concerns and related codes. These issues can often be caused by critical pressure loss due to excess wear in the TCC regulator bore. Installing Sonnax TCC regulator valve kit 34994-01K shores up the hydraulic integrity of the TCC control circuit to return robust TCC operation.
- Hardcoat anodized aluminum valve combats premature wear
- Lengthened critical spool for added stability and wear prevention
- Annular grooves help center valve in bore to reduce future side-load wear
- Added chamfer to improve apply characteristics and prevent shudder
- Two springs included in kit; one for OE lockup feel, the other provides firmer-than-OE
- Valve
- Spring .420" O.D.
- Seal Scarf-Cut
- Spring .300" O.D.
Description
Valve Kit; Torque Converter Clutch; TCC; Regulator ; For Use In Mildly Worn Bores
Specifications
Transmissions
| Name | Years |
|---|---|
| 4L80-E | 1991 - 2015 |
| 4L80-E-HD/MN8 | 2002 - 2002 |
| THM-R2/MT1 | 1991 - 1991 |
| 4L85-E | 2002 - 2009 |
Vehicle Fitment
| Years | Vehicle | Drive Types |
|---|---|---|
| 1994 - 2001 | AM General Hummer | 4WD |
| 1997 - 1998 | Aston Martin DB7 | RWD |
| 1993 - 1998 | Bentley Turbo R | RWD |
| 1993 - 2003 | Bentley Continental | RWD |
| 1993 - 1998 | Bentley Brooklands | RWD |
| 1996 - 2006 | Bentley Azure | RWD |
| 2000 - 2007 | Bentley Arnage | RWD |
| 2002 - 2003 | Cadillac Escalade EXT | AWD |
| 2003 - 2003 | Cadillac Escalade ESV | AWD |
| 2002 - 2003 | Cadillac Escalade | AWD, RWD |
| 2004 - 2007 | Chevrolet W4500 Tiltmaster | 4 X 2 |
| 2004 - 2007 | Chevrolet W3500 Tiltmaster | 4 X 2 |
| 1991 - 1991 | Chevrolet V3500 | 4WD |
| 1991 - 1991 | Chevrolet V2500 Suburban | 4WD |
| 1991 - 1991 | Chevrolet V1500 Suburban | 4WD |
| 1995 - 1999 | Chevrolet Tahoe | RWD, 4WD |
| 2000 - 2007 | Chevrolet Suburban 2500 | RWD, 4WD |
| 2001 - 2003 | Chevrolet Suburban 1500 | RWD, 4WD |
| 2007 - 2007 | Chevrolet Silverado 3500 Classic | RWD, 4WD |
| 2001 - 2006 | Chevrolet Silverado 3500 | RWD, 4WD |
| 2007 - 2007 | Chevrolet Silverado 2500 HD Classic | RWD, 4WD |
| 2001 - 2006 | Chevrolet Silverado 2500 HD | RWD, 4WD |
| 1999 - 2004 | Chevrolet Silverado 2500 | RWD, 4WD |
| 2007 - 2007 | Chevrolet Silverado 1500 HD Classic | RWD, 4WD |
| 2001 - 2006 | Chevrolet Silverado 1500 HD | RWD, 4WD |
| 2002 - 2006 | Chevrolet Silverado 1500 | AWD, RWD, 4WD |
| 1991 - 1991 | Chevrolet R3500 | RWD |
| 1991 - 1991 | Chevrolet R2500 Suburban | RWD |
| 1991 - 1991 | Chevrolet R1500 Suburban | RWD |
| 1991 - 1999 | Chevrolet P30 | RWD |
| 1991 - 2000 | Chevrolet K3500 | 4WD |
| 1992 - 1999 | Chevrolet K2500 Suburban | 4WD |
| 1991 - 2000 | Chevrolet K2500 | 4WD |
| 1992 - 1999 | Chevrolet K1500 Suburban | 4WD |
| 1991 - 1999 | Chevrolet K1500 | 4WD |
| 1991 - 1996 | Chevrolet G30 | RWD |
| 2009 - 2015 | Chevrolet Express Pasajeros | |
| 2009 - 2009 | Chevrolet Express 4500 | 4 X 2 |
| 1996 - 2009 | Chevrolet Express 3500 | RWD |
| 1996 - 2009 | Chevrolet Express 2500 | AWD, RWD |
| 1991 - 2002 | Chevrolet C3500HD | 4 X 2 |
| 1991 - 2000 | Chevrolet C3500 | RWD |
| 1992 - 1999 | Chevrolet C2500 Suburban | RWD |
| 1991 - 2000 | Chevrolet C2500 | RWD |
| 1992 - 1999 | Chevrolet C1500 Suburban | RWD |
| 1991 - 1999 | Chevrolet C1500 | RWD |
| 1991 - 1994 | Chevrolet Blazer | 4WD |
| 2002 - 2006 | Chevrolet Avalanche 2500 | RWD, 4WD |
| 2000 - 2007 | GMC Yukon XL 2500 | RWD, 4WD |
| 2001 - 2003 | GMC Yukon XL 1500 | AWD, RWD, 4WD |
| 1992 - 2001 | GMC Yukon | AWD, RWD, 4WD |
| 2004 - 2007 | GMC W4500 Forward | 4 X 2 |
| 2004 - 2007 | GMC W3500 Forward | 4 X 2 |
| 1991 - 1991 | GMC V3500 | 4WD |
| 1991 - 1991 | GMC V2500 Suburban | 4WD |
| 1991 - 1991 | GMC V1500 Suburban | 4WD |
| 2007 - 2007 | GMC Sierra 3500 Classic | RWD, 4WD |
| 2001 - 2006 | GMC Sierra 3500 | RWD, 4WD |
| 2007 - 2007 | GMC Sierra 2500 HD Classic | RWD, 4WD |
| 2001 - 2006 | GMC Sierra 2500 HD | RWD, 4WD |
| 1999 - 2004 | GMC Sierra 2500 | RWD, 4WD |
| 2007 - 2007 | GMC Sierra 1500 HD Classic | RWD, 4WD |
| 2001 - 2006 | GMC Sierra 1500 HD | RWD, 4WD |
| 2001 - 2006 | GMC Sierra 1500 | AWD, RWD, 4WD |
| 2009 - 2009 | GMC Savana 4500 | 4 X 2 |
| 1996 - 2009 | GMC Savana 3500 | RWD |
| 1996 - 2009 | GMC Savana 2500 | AWD, RWD |
| 1996 - 1996 | GMC Savana 1500 | RWD |
| 1991 - 1991 | GMC R3500 | RWD |
| 1991 - 1991 | GMC R2500 Suburban | RWD |
| 1991 - 1991 | GMC R1500 Suburban | RWD |
| 1991 - 1999 | GMC P3500 | RWD |
| 1991 - 2000 | GMC K3500 | 4WD |
| 1992 - 1999 | GMC K2500 Suburban | 4WD |
| 1991 - 2000 | GMC K2500 | 4WD |
| 1992 - 1999 | GMC K1500 Suburban | 4WD |
| 1991 - 1999 | GMC K1500 | 4WD |
| 1991 - 1991 | GMC Jimmy | 4WD |
| 1991 - 1996 | GMC G3500 | RWD |
| 1991 - 1991 | GMC G2500 | RWD |
| 1991 - 1991 | GMC G1500 | RWD |
| 1991 - 2002 | GMC C3500HD | 4 X 2 |
| 1991 - 2000 | GMC C3500 | RWD |
| 1992 - 1999 | GMC C2500 Suburban | RWD |
| 1991 - 2000 | GMC C2500 | RWD |
| 1992 - 1999 | GMC C1500 Suburban | RWD |
| 1991 - 1999 | GMC C1500 | RWD |
| 2002 - 2004 | Hummer H1 | 4WD |
| 2005 - 2007 | Isuzu NPR-HD | 4 X 2 |
| 1992 - 2007 | Isuzu NPR | 4 X 2 |
| 1993 - 1996 | Jaguar XJS | RWD |
| 1994 - 1996 | Jaguar XJ12 | RWD |
| 1994 - 1994 | Rolls-Royce Touring Limousine | RWD |
| 1993 - 1994 | Rolls-Royce Silver Spur | RWD |
| 1993 - 1994 | Rolls-Royce Silver Spirit | RWD |
| 1995 - 1995 | Rolls-Royce Flying Spur | RWD |
| 1995 - 1995 | Rolls-Royce Corniche S | RWD |
| 1993 - 1995 | Rolls-Royce Corniche IV | RWD |
| 2000 - 2005 | Workhorse P30 | RWD |
| 2002 - 2003 | Workhorse FasTrack FT931 | RWD |
| 2002 - 2003 | Workhorse FasTrack FT1802 | RWD |
| 2002 - 2005 | Workhorse FasTrack FT1801 | RWD |
| 2000 - 2001 | Workhorse FasTrack FT1800 | RWD |
| 2002 - 2005 | Workhorse FasTrack FT1601 | RWD |
| 2000 - 2001 | Workhorse FasTrack FT1600 | RWD |
| 2002 - 2005 | Workhorse FasTrack FT1461 | RWD |
| 2000 - 2002 | Workhorse FasTrack FT1460 | RWD |
| 2002 - 2005 | Workhorse FasTrack FT1261 | RWD |
| 2000 - 2001 | Workhorse FasTrack FT1260 | RWD |
| 2002 - 2005 | Workhorse FasTrack FT1061 | RWD |