Sonnax Oversized Pressure Regulator Valve for 4L60E, 4L65E, 4L70E Transmissions
A worn Original Equipment (OE) pressure regulator valve in GM 4L60-E, 4L65-E, and 4L70-E transmissions can manifest in two detectable ways. The first is through a dynamometer test that shows low line pressure during boost conditions, typically 50-100 psi less than specified in Reverse. The second is noticeable vehicle symptoms, including clutch slippage, reverse chatter, and 3-4 clutch failure. These issues are indicative of bore wear that requires attention.
To combat pressure regulator leakage in these GM transmission pump bodies, Sonnax offers the oversized pressure regulator valve 77917-07. This Sonnax valve allows pump covers to be restored to OE specifications, effectively correcting wear and leakage at the pressure regulator valve.
Key Features
- Refurbishes the pump cover by reaming the bore and installing an oversized pressure regulator valve
- Restores control over the pressure regulating circuit by eliminating leakage
Note
- It is advisable to check boost valves for leakage when replacing the pressure regulator valve. When oversizing the pressure regulator valve, it is recommended to move up one boost ratio.
Transmissions: 4L70E (M70) 2004-UP, 4L65E (M32) 1993-UP, 4L60E (M33,M30) 1993-UP
Vehicle
BUICKRAINIER 2003-2007 4 SP R/4WD L6 4.2L V8 5.3L
ROADMASTER SEDAN, ROADMASTER WAGON 1995-1996 4 SP RWD V8 5.7L
CADILLACESCALADE/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
CHEVROLETAVALANCHE 2006-2008 4 SP R/4WD V8 6.0L
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, CORVETTE, SONOMA, S/T PICK-UP, SAFARI 1995-2005 4 SP RWD V8 5.7L 6.0L
SILVERADO 1998-2013 4 SP R/4WD V6 4.3L V8 4.8L 5.3L V8 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
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
GMCSIERRA 1500 1998-2013 4 SP R/4WD V6 4.3L V8 4.8L 5.3L V8 6.0L
YUKON , 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
HOLDENADVENTRA 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
ISUZUASCENDER 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
OLDSMOBILEBRAVADA 1995-2004 4 SP R/4WD V6 4.2L 4.3L
PONTIACGTO 2004-2006 4 SP RWD V8 5.7L 6.0L
FIREBIRD 1995-2002 4 SP R/4WD V6 3.8L V8 5.7L
SAAB9'7X 2005-2009 4 SP R/4WD V6 4.2L V8 5.3L
SUZUKIVitara 2000-2004 4 SPD RWD,4WD
Alternate Words: 8684049, Automatic Transmission, Reprogramming, Improvement , Correction, Shift , Valve Body Rebuild Kit