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Sonnax Valve Kit S74741QAK
  • Sonnax Valve Kit S74741QAK
  • Sonnax Valve Kit S74741QAK
  • Sonnax Valve Kit S74741QAK

SonnaxValve Kit

Part #: S74741QAK
$70.51
Quantity
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Description & Specs

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

Valve Kit; Torque Converter Clutch; Regulator; & EC3 Units

Name Specs
Package UOMEach
Quantity Per UOM1
Weight0.80
Weight UOMPounds

Transmissions

Name Years
4L60-E1993 - 2014
THM700-R41987 - 1992
THM700-R4/4L60/MD81982 - 1993
4L65-E2001 - 2007
4L70-E2006 - 2009
4L60-E-HD2002 - 2006

Vehicle Fitment

Years Vehicle Drive Types
1987 - 2004Avanti IIRWD
1991 - 1992Bentley Turbo RRWD
1992 - 1992Bentley MulsanneRWD
1991 - 1992Bentley ContinentalRWD
1991 - 1996Buick RoadmasterRWD
1984 - 1984Buick RegalRWD
2004 - 2007Buick RainierAWD, RWD
1988 - 1988Buick LeSabreRWD
1988 - 1989Buick ElectraRWD
1991 - 1996Buick Commercial ChassisRWD
1993 - 1996Cadillac FleetwoodRWD
2002 - 2006Cadillac Escalade EXTAWD
2003 - 2006Cadillac Escalade ESVAWD
1999 - 2006Cadillac EscaladeAWD, RWD, 4WD
1992 - 1996Cadillac Commercial ChassisRWD
1990 - 1992Cadillac BroughamRWD
1989 - 1991Chevrolet V35004WD
1987 - 1988Chevrolet V304WD
1989 - 1991Chevrolet V2500 Suburban4WD
1987 - 1988Chevrolet V20 Suburban4WD
1987 - 1987Chevrolet V204WD
1989 - 1991Chevrolet V1500 Suburban4WD
1987 - 1988Chevrolet V10 Suburban4WD
1987 - 1987Chevrolet V104WD
2002 - 2006Chevrolet Trailblazer EXTRWD, 4WD
2002 - 2009Chevrolet TrailblazerAWD, RWD, 4WD
1995 - 2009Chevrolet TahoeRWD, 4WD
2000 - 2000Chevrolet Suburban 2500RWD, 4WD
2000 - 2008Chevrolet Suburban 1500AWD, RWD, 4WD
2003 - 2006Chevrolet SSRRWD
1999 - 2001Chevrolet Silverado 2500RWD, 4WD
2007 - 2007Chevrolet Silverado 1500 ClassicRWD, 4WD
1999 - 2013Chevrolet Silverado 1500AWD, RWD, 4WD
1983 - 1994Chevrolet S10 BlazerRWD, 4WD
1983 - 2004Chevrolet S10FWD, RWD, 4WD
1989 - 1991Chevrolet R3500RWD
1987 - 1988Chevrolet R30RWD
1989 - 1991Chevrolet R2500 SuburbanRWD
1989 - 1989Chevrolet R2500RWD
1987 - 1988Chevrolet R20 SuburbanRWD
1987 - 1988Chevrolet R20RWD
1989 - 1991Chevrolet R1500 SuburbanRWD
1987 - 1988Chevrolet R10 SuburbanRWD
1987 - 1987Chevrolet R10RWD
1982 - 1988Chevrolet Monte CarloRWD
1982 - 1983Chevrolet MalibuRWD
1982 - 1986Chevrolet K5 BlazerRWD, 4WD
1988 - 1989Chevrolet K35004WD
1982 - 1986Chevrolet K304WD
1992 - 1996Chevrolet K2500 Suburban4WD
1988 - 1998Chevrolet K25004WD
1982 - 1986Chevrolet K20 Suburban4WD
1982 - 1986Chevrolet K204WD
1992 - 1999Chevrolet K1500 Suburban4WD
1988 - 1999Chevrolet K15004WD
1982 - 1986Chevrolet K10 Suburban4WD
1982 - 1986Chevrolet K104WD
1982 - 1996Chevrolet ImpalaRWD
1983 - 1995Chevrolet G30RWD
1983 - 1995Chevrolet G20RWD
1983 - 1995Chevrolet G10RWD
2009 - 2009Chevrolet Express 45004 X 2
2006 - 2009Chevrolet Express 3500RWD
1996 - 2009Chevrolet Express 2500AWD, RWD
1996 - 2014Chevrolet Express 1500AWD, RWD
1982 - 1987Chevrolet El CaminoRWD
1982 - 2005Chevrolet CorvetteRWD
1991 - 1993Chevrolet Commercial ChassisRWD
2004 - 2012Chevrolet ColoradoRWD, 4WD
1982 - 1996Chevrolet CapriceRWD
1983 - 2002Chevrolet CamaroRWD
1988 - 1990Chevrolet C3500RWD
1982 - 1986Chevrolet C30RWD
1992 - 1996Chevrolet C2500 SuburbanRWD
1988 - 1999Chevrolet C2500RWD
1982 - 1986Chevrolet C20 SuburbanRWD
1982 - 1986Chevrolet C20RWD
1992 - 1999Chevrolet C1500 SuburbanRWD
1988 - 1999Chevrolet C1500RWD
1982 - 1986Chevrolet C10 SuburbanRWD
1982 - 1986Chevrolet C10RWD
1987 - 2005Chevrolet BlazerAWD, RWD, 4WD
2002 - 2006Chevrolet Avalanche 1500RWD, 4WD
2007 - 2008Chevrolet AvalancheRWD, 4WD
1985 - 2005Chevrolet AstroAWD, RWD
2000 - 2000GMC Yukon XL 2500RWD, 4WD
2000 - 2008GMC Yukon XL 1500AWD, RWD, 4WD
1992 - 2010GMC YukonAWD, RWD, 4WD
1987 - 1991GMC V35004WD
1987 - 1991GMC V2500 Suburban4WD
1987 - 1987GMC V25004WD
1987 - 1991GMC V1500 Suburban4WD
1987 - 1987GMC V15004WD
1992 - 1993GMC TyphoonAWD
1991 - 1991GMC SycloneAWD
1991 - 2004GMC SonomaRWD, 4WD
1999 - 2001GMC Sierra 2500RWD, 4WD
2001 - 2003GMC Sierra 1500 HDRWD, 4WD
2007 - 2007GMC Sierra 1500 ClassicAWD, RWD, 4WD
1999 - 2013GMC Sierra 1500AWD, RWD, 4WD
2009 - 2009GMC Savana 45004 X 2
2006 - 2009GMC Savana 3500RWD
1996 - 2009GMC Savana 2500AWD, RWD
1996 - 2014GMC Savana 1500AWD, RWD
1985 - 2005GMC SafariAWD, RWD
1983 - 1991GMC S15 JimmyRWD, 4WD
1983 - 1990GMC S15RWD, 4WD
1987 - 1991GMC R3500RWD
1987 - 1991GMC R2500 SuburbanRWD
1987 - 1989GMC R2500RWD
1987 - 1991GMC R1500 SuburbanRWD
1987 - 1987GMC R1500RWD
1982 - 1991GMC K35004WD
1982 - 1996GMC K2500 Suburban4WD
1982 - 1998GMC K25004WD
1982 - 1999GMC K1500 Suburban4WD
1982 - 1999GMC K15004WD
1982 - 2001GMC JimmyAWD, RWD, 4WD
1983 - 1995GMC G3500RWD
1983 - 1995GMC G2500RWD
1983 - 1995GMC G1500RWD
2004 - 2005GMC Envoy XUVRWD, 4WD
2002 - 2006GMC Envoy XLRWD, 4WD
2002 - 2009GMC EnvoyRWD, 4WD
2004 - 2012GMC CanyonRWD, 4WD
1984 - 1987GMC CaballeroRWD
1982 - 1991GMC C3500RWD
1982 - 1996GMC C2500 SuburbanRWD
1982 - 1999GMC C2500RWD
1982 - 1999GMC C1500 SuburbanRWD
1982 - 1999GMC C1500RWD
2009 - 2010Hummer H3T4WD
2006 - 2010Hummer H34WD
2003 - 2007Hummer H24WD
1991 - 1991Isuzu PickupRWD, 4WD
2007 - 2008Isuzu i-370RWD, 4WD
2006 - 2006Isuzu i-3504WD
2007 - 2008Isuzu i-290RWD
2006 - 2006Isuzu i-280RWD
1996 - 2000Isuzu HombreRWD, 4WD
2003 - 2008Isuzu AscenderRWD, 4WD
1984 - 1988Oldsmobile Cutlass SupremeRWD
1984 - 1984Oldsmobile Cutlass CalaisRWD
1988 - 1992Oldsmobile Custom CruiserRWD
1991 - 2004Oldsmobile BravadaAWD, RWD
1988 - 1988Pontiac SafariRWD
1983 - 1986Pontiac ParisienneRWD
2004 - 2006Pontiac GTORWD
1983 - 1986Pontiac Grand PrixRWD
1983 - 2002Pontiac FirebirdRWD
1983 - 1986Pontiac BonnevilleRWD
2005 - 2009Saab 9-7xAWD

Documents & Information