Superseded Part Number: S74741QAK, 77754-04K
Interchange Part Number: S74741QAK, 77754-04K
Manufacturer Part Number: S74741QAK, 77754-04K
Additional Tooling: F-77754-TL4, F-77754-SERV, 77754-R2, 77754-SERV, 7
UPC: Does not apply
Other Part Number: S74741QAK, 77754-04K
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.4L60-E, 4L65-E, 4L70-E
TCC Regulator & Isolator Valve Kit
Part No. 77754-04K
Any application, including '98-later EC3 units
- Tooling (NOT INCLUDED IN THIS LISTING): F-77754-TL4, F-77754-SERV, 77754-R2, 77754-SERV, 77754-RM5, VB-FIX
Severe wear of the TCC regulator valve bore caused by oscillation of the OE valve allows regulated converter apply pressure to exhaust. This is a primary cause for TCC-related slip code P1870 and overheated converters. Exhausting apply pressure also diminishes line pressure, which can result in burnt clutches. Excess wear at the isolator valve bore reduces TCC apply pressure. Reconditioning the bore and installing Sonnax TCC regulator and isolator valve kit 77754-04K restores normal TCC operation by restablishing the hydraulic integrity of this circuit.
- Sleeve manufactured from highly wear-resistant aluminum
- Hardcoat anodized aluminum regulator valve combats premature wear
- Isolator valve lengthened to operate in unworn portions of the bore
- Annular grooves help center valves in bore to reduce future side-load wear
- Isolator Valve
- Spring
- Regulator Valve
- Regulator Sleeve
Description
Valve Kit; Torque Converter Clutch; TCC; Regulator; & EC3 Units
Specifications
Transmissions
| Name | Years |
|---|---|
| 4L60-E | 1993 - 2014 |
| THM700-R4 | 1987 - 1992 |
| THM700-R4/4L60/MD8 | 1982 - 1993 |
| 4L65-E | 2001 - 2007 |
| 4L70-E | 2006 - 2009 |
| 4L60-E-HD | 2002 - 2006 |
Vehicle Fitment
| Years | Vehicle | Drive Types |
|---|---|---|
| 1987 - 2004 | Avanti II | FWD, RWD |
| 1991 - 1992 | Bentley Turbo R | RWD |
| 1992 - 1992 | Bentley Mulsanne | RWD |
| 1991 - 1992 | Bentley Continental | RWD |
| 1991 - 1996 | Buick Roadmaster | RWD |
| 1984 - 1984 | Buick Regal | RWD |
| 2004 - 2007 | Buick Rainier | AWD, RWD |
| 1988 - 1988 | Buick LeSabre | RWD |
| 1988 - 1989 | Buick Electra | RWD |
| 1991 - 1996 | Buick Commercial Chassis | RWD |
| 1993 - 1996 | Cadillac Fleetwood | RWD |
| 2002 - 2006 | Cadillac Escalade EXT | AWD |
| 2003 - 2006 | Cadillac Escalade ESV | AWD |
| 1999 - 2006 | Cadillac Escalade | AWD, RWD, 4WD |
| 1992 - 1996 | Cadillac Commercial Chassis | RWD |
| 1990 - 1992 | Cadillac Brougham | RWD |
| 1989 - 1991 | Chevrolet V3500 | 4WD |
| 1987 - 1988 | Chevrolet V30 | 4WD |
| 1989 - 1991 | Chevrolet V2500 Suburban | 4WD |
| 1987 - 1988 | Chevrolet V20 Suburban | 4WD |
| 1987 - 1987 | Chevrolet V20 | 4WD |
| 1989 - 1991 | Chevrolet V1500 Suburban | 4WD |
| 1987 - 1988 | Chevrolet V10 Suburban | 4WD |
| 1987 - 1987 | Chevrolet V10 | 4WD |
| 2002 - 2006 | Chevrolet Trailblazer EXT | RWD, 4WD |
| 2002 - 2009 | Chevrolet Trailblazer | AWD, RWD, 4WD |
| 1995 - 2009 | Chevrolet Tahoe | RWD, 4WD |
| 2000 - 2000 | Chevrolet Suburban 2500 | RWD, 4WD |
| 2000 - 2008 | Chevrolet Suburban 1500 | AWD, RWD, 4WD |
| 2003 - 2006 | Chevrolet SSR | RWD |
| 1999 - 2001 | Chevrolet Silverado 2500 | RWD, 4WD |
| 2007 - 2007 | Chevrolet Silverado 1500 Classic | RWD, 4WD |
| 1999 - 2013 | Chevrolet Silverado 1500 | AWD, RWD, 4WD |
| 1983 - 1994 | Chevrolet S10 Blazer | RWD, 4WD |
| 1983 - 2004 | Chevrolet S10 | FWD, RWD, 4WD |
| 1989 - 1991 | Chevrolet R3500 | RWD |
| 1987 - 1988 | Chevrolet R30 | RWD |
| 1989 - 1991 | Chevrolet R2500 Suburban | RWD |
| 1989 - 1989 | Chevrolet R2500 | RWD |
| 1987 - 1988 | Chevrolet R20 Suburban | RWD |
| 1987 - 1988 | Chevrolet R20 | RWD |
| 1989 - 1991 | Chevrolet R1500 Suburban | RWD |
| 1987 - 1988 | Chevrolet R10 Suburban | RWD |
| 1987 - 1987 | Chevrolet R10 | RWD |
| 1982 - 1988 | Chevrolet Monte Carlo | RWD |
| 1982 - 1983 | Chevrolet Malibu | RWD |
| 1982 - 1986 | Chevrolet K5 Blazer | RWD, 4WD |
| 1988 - 1989 | Chevrolet K3500 | 4WD |
| 1982 - 1986 | Chevrolet K30 | 4WD |
| 1992 - 1996 | Chevrolet K2500 Suburban | 4WD |
| 1988 - 1998 | Chevrolet K2500 | 4WD |
| 1982 - 1986 | Chevrolet K20 Suburban | 4WD |
| 1982 - 1986 | Chevrolet K20 | 4WD |
| 1992 - 1999 | Chevrolet K1500 Suburban | 4WD |
| 1988 - 1999 | Chevrolet K1500 | 4WD |
| 1982 - 1986 | Chevrolet K10 Suburban | 4WD |
| 1982 - 1986 | Chevrolet K10 | 4WD |
| 1982 - 1996 | Chevrolet Impala | RWD |
| 1983 - 1995 | Chevrolet G30 | RWD |
| 1983 - 1995 | Chevrolet G20 | RWD |
| 1983 - 1995 | Chevrolet G10 | RWD |
| 2009 - 2009 | Chevrolet Express 4500 | 4 X 2 |
| 2006 - 2009 | Chevrolet Express 3500 | RWD |
| 1996 - 2009 | Chevrolet Express 2500 | AWD, RWD |
| 1996 - 2014 | Chevrolet Express 1500 | AWD, RWD |
| 1982 - 1987 | Chevrolet El Camino | RWD |
| 1982 - 2005 | Chevrolet Corvette | RWD |
| 1991 - 1993 | Chevrolet Commercial Chassis | RWD |
| 2004 - 2012 | Chevrolet Colorado | RWD, 4WD |
| 1982 - 1996 | Chevrolet Caprice | RWD |
| 1983 - 2002 | Chevrolet Camaro | RWD |
| 1988 - 1990 | Chevrolet C3500 | RWD |
| 1982 - 1986 | Chevrolet C30 | RWD |
| 1992 - 1996 | Chevrolet C2500 Suburban | RWD |
| 1988 - 1999 | Chevrolet C2500 | RWD |
| 1982 - 1986 | Chevrolet C20 Suburban | RWD |
| 1982 - 1986 | Chevrolet C20 | RWD |
| 1992 - 1999 | Chevrolet C1500 Suburban | RWD |
| 1988 - 1999 | Chevrolet C1500 | RWD |
| 1982 - 1986 | Chevrolet C10 Suburban | RWD |
| 1982 - 1986 | Chevrolet C10 | RWD |
| 1987 - 2005 | Chevrolet Blazer | AWD, RWD, 4WD |
| 2002 - 2006 | Chevrolet Avalanche 1500 | RWD, 4WD |
| 2007 - 2008 | Chevrolet Avalanche | RWD, 4WD |
| 1985 - 2005 | Chevrolet Astro | AWD, RWD |
| 2000 - 2000 | GMC Yukon XL 2500 | RWD, 4WD |
| 2000 - 2008 | GMC Yukon XL 1500 | AWD, RWD, 4WD |
| 1992 - 2010 | GMC Yukon | AWD, RWD, 4WD |
| 1987 - 1991 | GMC V3500 | 4WD |
| 1987 - 1991 | GMC V2500 Suburban | 4WD |
| 1987 - 1987 | GMC V2500 | 4WD |
| 1987 - 1991 | GMC V1500 Suburban | 4WD |
| 1987 - 1987 | GMC V1500 | 4WD |
| 1992 - 1993 | GMC Typhoon | AWD |
| 1991 - 1991 | GMC Syclone | AWD |
| 1991 - 2004 | GMC Sonoma | RWD, 4WD |
| 1999 - 2001 | GMC Sierra 2500 | RWD, 4WD |
| 2001 - 2003 | GMC Sierra 1500 HD | RWD, 4WD |
| 2007 - 2007 | GMC Sierra 1500 Classic | AWD, RWD, 4WD |
| 1999 - 2013 | GMC Sierra 1500 | AWD, RWD, 4WD |
| 2009 - 2009 | GMC Savana 4500 | 4 X 2 |
| 2006 - 2009 | GMC Savana 3500 | RWD |
| 1996 - 2009 | GMC Savana 2500 | AWD, RWD |
| 1996 - 2014 | GMC Savana 1500 | AWD, RWD |
| 1985 - 2005 | GMC Safari | AWD, RWD |
| 1983 - 1991 | GMC S15 Jimmy | RWD, 4WD |
| 1983 - 1990 | GMC S15 | RWD, 4WD |
| 1987 - 1991 | GMC R3500 | RWD |
| 1987 - 1991 | GMC R2500 Suburban | RWD |
| 1987 - 1989 | GMC R2500 | RWD |
| 1987 - 1991 | GMC R1500 Suburban | RWD |
| 1987 - 1987 | GMC R1500 | RWD |
| 1982 - 1991 | GMC K3500 | 4WD |
| 1982 - 1996 | GMC K2500 Suburban | 4WD |
| 1982 - 1998 | GMC K2500 | 4WD |
| 1982 - 1999 | GMC K1500 Suburban | 4WD |
| 1982 - 1999 | GMC K1500 | 4WD |
| 1982 - 2001 | GMC Jimmy | AWD, RWD, 4WD |
| 1983 - 1995 | GMC G3500 | RWD |
| 1983 - 1995 | GMC G2500 | RWD |
| 1983 - 1995 | GMC G1500 | RWD |
| 2004 - 2005 | GMC Envoy XUV | RWD, 4WD |
| 2002 - 2006 | GMC Envoy XL | RWD, 4WD |
| 2002 - 2009 | GMC Envoy | RWD, 4WD |
| 2004 - 2012 | GMC Canyon | RWD, 4WD |
| 1984 - 1987 | GMC Caballero | RWD |
| 1982 - 1991 | GMC C3500 | RWD |
| 1982 - 1996 | GMC C2500 Suburban | RWD |
| 1982 - 1999 | GMC C2500 | RWD |
| 1982 - 1999 | GMC C1500 Suburban | RWD |
| 1982 - 1999 | GMC C1500 | RWD |
| 2009 - 2010 | Hummer H3T | 4WD |
| 2006 - 2010 | Hummer H3 | 4WD |
| 2003 - 2007 | Hummer H2 | 4WD |
| 1991 - 1991 | Isuzu Pickup | RWD, 4WD |
| 2007 - 2008 | Isuzu i-370 | RWD, 4WD |
| 2006 - 2006 | Isuzu i-350 | 4WD |
| 2007 - 2008 | Isuzu i-290 | RWD |
| 2006 - 2006 | Isuzu i-280 | RWD |
| 1996 - 2000 | Isuzu Hombre | RWD, 4WD |
| 2003 - 2008 | Isuzu Ascender | RWD, 4WD |
| 1984 - 1988 | Oldsmobile Cutlass Supreme | RWD |
| 1984 - 1984 | Oldsmobile Cutlass Calais | RWD |
| 1988 - 1992 | Oldsmobile Custom Cruiser | RWD |
| 1991 - 2004 | Oldsmobile Bravada | AWD, RWD |
| 1988 - 1988 | Pontiac Safari | RWD |
| 1983 - 1986 | Pontiac Parisienne | RWD |
| 2004 - 2006 | Pontiac GTO | RWD |
| 1983 - 1986 | Pontiac Grand Prix | RWD |
| 1983 - 2002 | Pontiac Firebird | RWD |
| 1983 - 1986 | Pontiac Bonneville | RWD |
| 2005 - 2009 | Saab 9-7x | AWD |