Sonnax Actuator Feed Limit Valve Kit 4L60E 4L65E 4L70E

Sonnax Actuator Feed Limit Valve Kit for 4L60E, 4L65E, 4L70E

Sonnax actuator feed limit valve kit 77754-09K is designed to eliminate pressure loss and restore proper operation in GM 4L60-E, 4L65-E, and 4L70-E transmissions. The AFL valve regulates solenoid feed pressure to the EPC and shift solenoids, but the OE design has a large reaction area that makes it highly susceptible to side-loading and bore wear.

As wear increases, oil pressure to the shift solenoids decreases, leading to solenoid and ratio codes, erratic line pressure, and poor shifting performance. The Sonnax upgrade features a durable valve and sleeve that prevent these issues, ensuring consistent pressure regulation.

Features & Benefits:

• Hardcoat anodized aluminum valve resists premature wear.
• Annular grooves prevent side-loading for smoother operation.
• 54% more support by operating in a full-contact sleeve.
• Drop-in Zip Valve™ parts for quick installation.

Note: Tool kit 77754-TL is also compatible with 4L80-E applications.

Kit Contents:

• Valve
• Sleeve
• Spring
• Retaining Clip

Common Symptoms Addressed:

• Wrong gear starts
• Solenoid performance codes
• Erratic line pressure
• Clutch and band failure
• No 4th gear
• Harsh shifts
• 2nd gear starts

Cause: Excessive bore wear in the AFL valve leads to low pressure at shift and EPC solenoids.

Correction: Installing the Sonnax actuator feed limit valve kit restores hydraulic integrity with a redesigned valve and wear-resistant sleeve, ensuring proper pressure regulation and improved transmission performance.

Transmissions: 4L60E (M33,M30) 1993-UP, 4L65E (M32) 1993-UP, 4L70E (M70) 2004-UP

Vehicle

BUICK
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
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, BLAZER, SONOMA, S/T PICK-UP, SAFARI, CORVETTE 1995-2005 4 SP R/4WD V6 4.3L
AVALANCHE 2001-2008 4 SP R/4WD V8 5.3L 6.0L 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
ENVOY, TRAILBLAZER 1999-2009 4 SP R/4WD V6 4.2L V8 5.3L
EXPRESS 1997-2016 4 SP R/4WD V6 4.3L V8 5.3L
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
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
SSR 2003-2006 4 SP RWD V8 5.3L 6.0L
GMC
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
YUKON , YUKON XL 2000-2011 4 SP R/4WD V8 4.8L 5.3L 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
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 1995-2002 4 SP R/4WD V6 3.8L V8 5.7L
GTO 2004-2006 4 SP RWD V8 5.7L 6.0L
SAAB
9'7X 2005-2009 4 SP R/4WD V6 4.2L V8 5.3L

Alternate Words: Automatic Transmission, Reprogramming, Improvement , Correction, Shift , Valve Body Rebuild Kit, 7775409K