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AUTOMATIC TRANSMISSION
4L80E 4L85E
4L80E 4L85E TRANSMISSION ACTUATOR FEED LIMIT VALVE KIT by SONNAX FITS '91-'09

4L80E 4L85E TRANSMISSION ACTUATOR FEED LIMIT VALVE KIT by SONNAX FITS '91-'09

SONNAX

SKU:

S34741LK

Condition:

New

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Description
Specifications

4L80E 4L85E
'91-'09 4-SPEED AUTOMATIC TRANSMISSION WITH 17 BOLT PAN:

ACTUATOR FEED LIMIT VALVE KIT

SONNAX 34200-16K
The actuator feed limit (AFL) valve in GM 4L80-E and 4L85-E units has a large reaction area and is greatly affected by side loading, which wears the valve body bore. The EPC solenoid oscillates the torque signal and AFL oil, which increases valve action and accelerates wear. As bore wear increases, oil pressure is reduced to the shift solenoids, which causes solenoid and ratio codes. The same AFL oil loss results in lower line pressure.
Installing Sonnax actuator feed limit valve kit 34200-16K corrects AFL oil pressure loss, restoring shift solenoid pressure to prevent wrong gear starts and other shift concerns. The hard-coat anodized valve is extremely wear resistant, and annular grooves have been added to minimize the effect of side loading. The Sonnax wear-resistant sleeve provides more valve contact area, providing additional support and further reducing valve and bore wear.

Symptoms:

Wrong gear starts
Clutch failure
Solenoid performance codes
No 4th
Band failure
Low solenoid feed pressure
2-3 Neutral
2nd Gear starts
Code 68, 85, 86, 87

Cause:

Actuator feed limit bore wear results in low pressure at shift and EPC solenoids.

Correction:

Redesigned anodized AFL valve regulates pressure while the wear-resistant sleeve re-establishes hydraulic integrity.

FITS THESE 4L80E & 4L85E EQUIPPED CHEVY, GMC, ISUZU, & HUMMER MODELS:

*YEARS*	*VEHICLE*	*DRIVE TYPES*
*1994 - 2001*	*AM General Hummer*	*4WD*
*1997 - 1998*	*Aston Martin DB7*	*RWD*
*1993 - 1998*	*Bentley Turbo R*	*RWD*
*1993 - 2003*	*Bentley Continental*	*RWD*
*1993 - 1998*	*Bentley Brooklands*	*RWD*
*1996 - 2006*	*Bentley Azure*	*RWD*
*2000 - 2007*	*Bentley Arnage*	*RWD*
*2002 - 2003*	*Cadillac Escalade EXT*	*AWD*
*2003 - 2003*	*Cadillac Escalade ESV*	*AWD*
*2002 - 2003*	*Cadillac Escalade*	*AWD, RWD*
*2004 - 2007*	*Chevrolet W4500 Tiltmaster*	*4 X 2*
*2004 - 2007*	*Chevrolet W3500 Tiltmaster*	*4 X 2*
*1991 - 1991*	*Chevrolet V3500*	*4WD*
*1991 - 1991*	*Chevrolet V2500 Suburban*	*4WD*
*1991 - 1991*	*Chevrolet V1500 Suburban*	*4WD*
*1995 - 1999*	*Chevrolet Tahoe*	*RWD, 4WD*
*2000 - 2007*	*Chevrolet Suburban 2500*	*RWD, 4WD*
*2001 - 2003*	*Chevrolet Suburban 1500*	*RWD, 4WD*
*2007 - 2007*	*Chevrolet Silverado 3500 Classic*	*RWD, 4WD*
*2001 - 2006*	*Chevrolet Silverado 3500*	*RWD, 4WD*
*2007 - 2007*	*Chevrolet Silverado 2500 HD Classic*	*RWD, 4WD*
*2001 - 2006*	*Chevrolet Silverado 2500 HD*	*RWD, 4WD*
*1999 - 2004*	*Chevrolet Silverado 2500*	*RWD, 4WD*
*2007 - 2007*	*Chevrolet Silverado 1500 HD Classic*	*RWD, 4WD*
*2001 - 2006*	*Chevrolet Silverado 1500 HD*	*RWD, 4WD*
*2002 - 2006*	*Chevrolet Silverado 1500*	*AWD, RWD, 4WD*
*1991 - 1991*	*Chevrolet R3500*	*RWD*
*1991 - 1991*	*Chevrolet R2500 Suburban*	*RWD*
*1991 - 1991*	*Chevrolet R1500 Suburban*	*RWD*
*1991 - 1999*	*Chevrolet P30*	*RWD*
*1991 - 2000*	*Chevrolet K3500*	*4WD*
*1992 - 1999*	*Chevrolet K2500 Suburban*	*4WD*
*1991 - 2000*	*Chevrolet K2500*	*4WD*
*1992 - 1999*	*Chevrolet K1500 Suburban*	*4WD*
*1991 - 1999*	*Chevrolet K1500*	*4WD*
*1991 - 1996*	*Chevrolet G30*	*RWD*
*2009 - 2009*	*Chevrolet Express 4500*	*4 X 2*
*1996 - 2009*	*Chevrolet Express 3500*	*RWD*
*1996 - 2009*	*Chevrolet Express 2500*	*AWD, RWD*
*1991 - 2002*	*Chevrolet C3500HD*	*4 X 2*
*1991 - 2000*	*Chevrolet C3500*	*RWD*
*1992 - 1999*	*Chevrolet C2500 Suburban*	*RWD*
*1991 - 2000*	*Chevrolet C2500*	*RWD*
*1992 - 1999*	*Chevrolet C1500 Suburban*	*RWD*
*1991 - 1999*	*Chevrolet C1500*	*RWD*
*1991 - 1994*	*Chevrolet Blazer*	*4WD*
*2002 - 2006*	*Chevrolet Avalanche 2500*	*RWD, 4WD*
*2000 - 2007*	*GMC Yukon XL 2500*	*RWD, 4WD*
*2001 - 2003*	*GMC Yukon XL 1500*	*AWD, RWD, 4WD*
*1992 - 2001*	*GMC Yukon*	*AWD, RWD, 4WD*
*2004 - 2007*	*GMC W4500 Forward*	*4 X 2*
*2004 - 2007*	*GMC W3500 Forward*	*4 X 2*
*1991 - 1991*	*GMC V3500*	*4WD*
*1991 - 1991*	*GMC V2500 Suburban*	*4WD*
*1991 - 1991*	*GMC V1500 Suburban*	*4WD*
*2007 - 2007*	*GMC Sierra 3500 Classic*	*RWD, 4WD*
*2001 - 2006*	*GMC Sierra 3500*	*RWD, 4WD*
*2007 - 2007*	*GMC Sierra 2500 HD Classic*	*RWD, 4WD*
*2001 - 2006*	*GMC Sierra 2500 HD*	*RWD, 4WD*
*1999 - 2004*	*GMC Sierra 2500*	*RWD, 4WD*
*2007 - 2007*	*GMC Sierra 1500 HD Classic*	*RWD, 4WD*
*2001 - 2006*	*GMC Sierra 1500 HD*	*RWD, 4WD*
*2001 - 2006*	*GMC Sierra 1500*	*AWD, RWD, 4WD*
*2009 - 2009*	*GMC Savana 4500*	*4 X 2*
*1996 - 2009*	*GMC Savana 3500*	*RWD*
*1996 - 2009*	*GMC Savana 2500*	*AWD, RWD*
*1996 - 1996*	*GMC Savana 1500*	*RWD*
*1991 - 1991*	*GMC R3500*	*RWD*
*1991 - 1991*	*GMC R2500 Suburban*	*RWD*
*1991 - 1991*	*GMC R1500 Suburban*	*RWD*
*1991 - 1999*	*GMC P3500*	*RWD*
*1991 - 2000*	*GMC K3500*	*4WD*
*1992 - 1999*	*GMC K2500 Suburban*	*4WD*
*1991 - 2000*	*GMC K2500*	*4WD*
*1992 - 1999*	*GMC K1500 Suburban*	*4WD*
*1991 - 1999*	*GMC K1500*	*4WD*
*1991 - 1991*	*GMC Jimmy*	*4WD*
*1991 - 1996*	*GMC G3500*	*RWD*
*1991 - 1991*	*GMC G2500*	*RWD*
*1991 - 1991*	*GMC G1500*	*RWD*
*1991 - 2002*	*GMC C3500HD*	*4 X 2*
*1991 - 2000*	*GMC C3500*	*RWD*
*1992 - 1999*	*GMC C2500 Suburban*	*RWD*
*1991 - 2000*	*GMC C2500*	*RWD*
*1992 - 1999*	*GMC C1500 Suburban*	*RWD*
*1991 - 1999*	*GMC C1500*	*RWD*
*2002 - 2004*	*Hummer H1*	*4WD*
*2005 - 2007*	*Isuzu NPR-HD*	*4 X 2*
*1992 - 2007*	*Isuzu NPR*	*4 X 2*
*1993 - 1996*	*Jaguar XJS*	*RWD*
*1994 - 1996*	*Jaguar XJ12*	*RWD*
*2000 - 2005*	*Workhorse P30*	*RWD*
*2002 - 2003*	*Workhorse FasTrack FT931*	*RWD*
*2002 - 2003*	*Workhorse FasTrack FT1802*	*RWD*
*2002 - 2005*	*Workhorse FasTrack FT1801*	*RWD*
*2000 - 2001*	*Workhorse FasTrack FT1800*	*RWD*
*2002 - 2005*	*Workhorse FasTrack FT1601*	*RWD*
*2000 - 2001*	*Workhorse FasTrack FT1600*	*RWD*
*2002 - 2005*	*Workhorse FasTrack FT1461*	*RWD*
*2000 - 2002*	*Workhorse FasTrack FT1460*	*RWD*
*2002 - 2005*	*Workhorse FasTrack FT1261*	*RWD*
*2000 - 2001*	*Workhorse FasTrack FT1260*	*RWD*
*2002 - 2005*	*Workhorse FasTrack FT1061*	*RWD*

ACTUATOR FEED LIMIT VALVE KIT
SONNAX 34200-16K
REQUIRES SONNAX T-77754-TL REAMING Tool Kit, SOLD SEPARATELY
Kit includes wear-resistant sleeve and anodized valve with annular grooves to prevent side loading
Valve operates in full-contact sleeve, providing 54% more support
Boosts oil pressure to the shift solenoids
Eliminates AFL oil loss, corrects low line pressure
Contents:
- Valve
- Sleeve
- Long Spring
- Short Spring
- Retaining Clip
PHOTOS SHOW ACTUAL KIT
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