Name: Servo Release Check Valve Kit Sonnax TH700 TH700-R4 4L60E 4L65E 4L70E
SKU: 452187

Sonnax Servo Release Check Valve Kit for TH700, TH700-R4, 4L60E, 4L65E, 4L70E

The Sonnax Servo Release Check Valve Kit 77701-076 addresses key issues in the GM 4L60 (TH700-R4) and 4L60-E series transmissions, such as reduced 3-4 clutch life and poor 2-3 shift feel. This innovative solution combines an orifice and ball check valve to improve metering of 2nd gear band servo release oil, effectively reducing 3-4 clutch failure and enhancing shift synchronization.

Features:

Improved design meters servo release oil, reducing 3-4 clutch failure
Ensures smooth 3-2 downshifts with sufficient exhaust
Calibrates 3-4 clutch feed orifice without creating shift concerns
Drop-in Zip Valve™ parts for quick and easy installation

Note:

Must be used with a properly functioning OE capsule.

Contents:

Valve
O-Ring

Symptoms:

Reduced 3-4 clutch life
Poor 2-3 shift feel
3-2 bind-up

Cause:

Inadequate metering of 2nd gear band servo release oil.

Correction:

Sonnax drop-in servo release check valve kit combines an orifice and ball check valve to effectively meter servo release oil.

Transmissions: TH700-R4 (TH700R4) 1982-UP, 4L70E (M70) 2004-UP, 4L65E (M32) 1993-UP, 4L60E (M33,M30) 1993-UP, TH700 (4L60) 1982-UP

Vehicle

BUICK
LeSabre 1984 4 SP
RAINIER 2003-2007 4 SP R/4WD L6 4.2L V8 5.3L
ROADMASTER SEDAN, ROADMASTER WAGON 1995-1996 4 SP RWD V8 5.7L
CADILLAC
Fleetwood 1990-1992 4 SP
ESCALADE/ESV/EXT 1999-2006 4 SP R/4WD V8 5.3L 5.7L 6.0L
FLEETWOOD, BROUGHAM, LIMO 1995-1996 4 SP RWD V8 5.7L
CHEVROLET
Astro Van 1989-1992 4 SP
Camaro 1983-1993 4 SP
Caprice, Impala, Corvette 1982-1993 4 SP
CK Blazer, Truck (C/K series) 1982-1992 4 SP
S10 Truck, Van (full size) 1983-1992 4 SP 2.8L
Suburban 1500 1987-1992 4 SP
SILVERADO 1998-2013 4 SP R/4WD V6 4.3L V8 4.8L 5.3L V8 6.0L
SUBURBAN 1500 1995-2008 4 SP R/4WD V8 4.8L 5.0L 5.3L 5.7L V8 6.0L
ENVOY, TRAILBLAZER 1999-2009 4 SP R/4WD L6 4.2L V8 5.3L V8 6.0L
CORVETTE, ASTRO, BLAZER, SONOMA, S/T PICK-UP, SAFARI 1995-2005 4 SP RWD V8 5.7L 6.0L
SSR 2003-2006 4 SP RWD V8 5.3L 6.0L
AVALANCHE 2001-2008 4 SP R/4WD V8 5.3L 8.1L 6.0L
C/K, PICK-UP 1500, C/K, PICK-UP 2500, C/K, PICK-UP 3500(95) 1995-1997 4 SP R/4WD V6 4.3L V8 4.8L 5.0L 5.3L 5.7L 6.0L
C-1500 2001-2015 4 SP 4WD V8 5.3L
CAMARO 1995-2002 4 SP RWD V6 3.4L 3.8L V8 5.7L
CANYON 2003-2013 4 SP R/4WD L4 2.8L 2.9L V6 3.5L L5 3.7L V8 5.3L
CAPRICE SEDAN, CAPRICE WAGON, IMPALA 1995-1996 4 SP RWD V8 4.3L 5.7L
COLORADO 2003-2012 4 SP R/4WD L4 2.8L 2.9L L5 3.5L 3.7L V6 3.6L V8 5.3L
EXPRESS 1997-2016 4 SP R/4WD V6 4.3L V8 5.3L
TAHOE 1995-2013 4 SP R/4WD V8 4.8L 5.3L 5.7L
VAN FULL SIZE 1500-2500 1995-2011 4 SP RWD V6 4.3L V8 4.8L 5.0L 5.3L 5.7L 6.5L DIESEL
VAN FULL SIZE 3500 1995-1999 4 SP RWD V6 4.3L
GMC
Jimmy 1982-1993 4 SP
S15/Sonoma 1983-1991 4 SP
Safari Van 1985-1989 4 SP
Suburban 1500 1987-1992 4 SP
Truck (C/K series) 1982-1992 4 SP
Van 1983-1990 4 SP
SIERRA 1500 1998-2013 4 SP R/4WD V6 4.3L V8 4.8L 5.3L V8 6.0L
YUKON 2000-2011 4 SP R/4WD V8 4.8L 5.3L 6.0L
YUKON XL 2000-2011 4 SP R/4WD V8 4.8L 5.3L 6.0L
SAVANA 1997-2016 4 SP R/4WD V6 4.3L V8 4.8L 5.3L
SIERRA 1500 1998-2013 4 SP R/4WD V6 4.3L V8 4.8L 5.3L V8 6.0L
HOLDEN
ADVENTRA 2004-2007 4 SP 4WD V8 5.7L
COMMODORE 2000-2011 4 SP RWD V6 3.6L 3.8L V8 5.7L
MONARO 2001-2006 4 SP RWD V8 5.7L
Caprice 1990-1992 4 SP
ISUZU
ASCENDER 2003-2008 4 SP R/4WD L6 4.2L V8 5.3L
HOMBRE 1997-2000 4 SP RWD L4 2.2L V6 4.3L
I SERIES (290, 370) 2006-2008 4 SP R/4WD L4 2.8L 2.9L L5 3.5L 3.7L
OLDSMOBILE
BRAVADA 1995-2004 4 SP R/4WD V6 4.2L 4.3L
PONTIAC
Firebird 1983-1993 4 SP
Parisienne 1984-1988 4 SP
Safari 1987-1989 4 SP
GTO 2004-2006 4 SP RWD V8 5.7L 6.0L
FIREBIRD 1995-2002 4 SP R/4WD V6 3.8L V8 5.7L
SAAB
9'7X 2005-2009 4 SP R/4WD V6 4.2L V8 5.3L
SUZUKI
Vitara 2000-2004 4 SPD RWD,4WD