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AUTOMATIC TRANSMISSION
4L80E 4L85E
4L80E 4L85E TRANSMISSION VALVE BODY #7 Low/Reverse CHECK BALL SEAT by SONNAX FITS '91-'09

4L80E 4L85E TRANSMISSION VALVE BODY #7 Low/Reverse CHECK BALL SEAT by SONNAX FITS '91-'09

SONNAX

SKU:

S34741R-4

Condition:

New

Availability:

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$38.77

$43.95

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Description
Specifications

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

#7 Low/Reverse CHECK BALL SEAT

BY SONNAX

Vehicles with GM 4L80-E and 4L85-E transmissions commonly exhibit wear in the #7 Low/Reverse checkball seat location. This issue is caused by normal movement of the checkball and slight movement of the seat within the bore over time. As wear progresses, sealing function of the checkball seat becomes compromised and results in loss of rear band apply (RBA) pressure. This can result in a burnt rear band, delayed or no Reverse and loss of engine braking in manual low. Installing Sonnax #7 Low/Reverse checkball seat S34741R-4 restores the hydraulic integrity of this circuit to re-establish normal pressure and performance. Replaces worn checkball seat to correct loss of RBA apply pressure; Checkball seal made from high-strength, wear-resistant aluminum for added durability; Drop-in Zip Valve™ parts install quickly and easily

FITS:

4L80-E	1991 - 2009
4L85-E	2002 - 2009

*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*
*1992 - 1996*	*GMC G3500*	*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*
*1994 - 1994*	*Rolls-Royce Touring Limousine*	*RWD*
*1993 - 1998*	*Rolls-Royce Silver Spur*	*RWD*
*1993 - 1995*	*Rolls-Royce Silver Spirit*	*RWD*
*1995 - 1997*	*Rolls-Royce Silver Dawn*	*RWD*
*2002 - 2002*	*Rolls-Royce Park Ward*	*RWD*
*1995 - 1995*	*Rolls-Royce Flying Spur*	*RWD*
*1995 - 1995*	*Rolls-Royce Corniche S*	*RWD*
*1993 - 1995*	*Rolls-Royce Corniche IV*	*RWD*
*2000 - 2002*	*Rolls-Royce Corniche*	*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*