In GM 4L60-E, 4L65-E and 4L70-E units, continuous oscillation of the Forward and Reverse abuse valves creates bore wear, allowing clutch feed pressure to exhaust. This reduced clutch pressure causes slippage and burn-up. The Sonnax drop-in replacement valve is slightly oversized and has extended spool lengths to provide additional sealing contact area. The stabilization flats on the inboard end of the spool maintain OE flow, but provide continual valve support while stroking. Annular grooves have been added to prevent side loading and a new spring is provided for the modified valve length. Sonnax Forward and Reverse abuse valve kit 77754-35K fits either the Forward or Reverse abuse location and includes a replacement bore plug. Kit raises clutch pressure slightly to prevent slippage and burn-up, an advantage for heavy-duty, plowing or repetitive forward-reverse maneuvers Eliminates leakage of clutch feed pressure to the exhaust port at the spring pocket One valve and spring combination works for either Forward or Reverse abuse locations No reaming is required for the slightly oversized drop-in replacement valve Includes replacement abuse bore plug Drop-in Zip Valve™ parts install quickly and easily
| Name | Years |
|---|---|
| 4L60-E | 1993 - 2014 |
| 4L65-E | 2001 - 2007 |
| 4L70-E | 2006 - 2009 |
| 4L60-E-HD | 2002 - 2006 |
| Years | Vehicle | Drive Types |
|---|---|---|
| 2001 - 2004 | Avanti II | RWD |
| 1994 - 1996 | Buick Roadmaster | RWD |
| 2004 - 2007 | Buick Rainier | AWD, RWD |
| 1994 - 1996 | Buick Commercial Chassis | RWD |
| 1994 - 1996 | Cadillac Fleetwood | RWD |
| 2002 - 2006 | Cadillac Escalade EXT | AWD |
| 2003 - 2006 | Cadillac Escalade ESV | AWD |
| 1999 - 2006 | Cadillac Escalade | AWD, RWD, 4WD |
| 1994 - 1996 | Cadillac Commercial Chassis | RWD |
| 2002 - 2006 | Chevrolet Trailblazer EXT | RWD, 4WD |
| 2002 - 2009 | Chevrolet Trailblazer | AWD, RWD, 4WD |
| 1995 - 2009 | Chevrolet Tahoe | RWD, 4WD |
| 2000 - 2000 | Chevrolet Suburban 2500 | RWD, 4WD |
| 2000 - 2008 | Chevrolet Suburban 1500 | AWD, RWD, 4WD |
| 2003 - 2006 | Chevrolet SSR | RWD |
| 1999 - 2001 | Chevrolet Silverado 2500 | RWD, 4WD |
| 2007 - 2007 | Chevrolet Silverado 1500 Classic | RWD, 4WD |
| 1999 - 2013 | Chevrolet Silverado 1500 | AWD, RWD, 4WD |
| 1993 - 1994 | Chevrolet S10 Blazer | RWD, 4WD |
| 1993 - 2004 | Chevrolet S10 | FWD, RWD, 4WD |
| 1993 - 1996 | Chevrolet K2500 Suburban | 4WD |
| 1993 - 1998 | Chevrolet K2500 | 4WD |
| 1993 - 1999 | Chevrolet K1500 Suburban | 4WD |
| 1993 - 1999 | Chevrolet K1500 | 4WD |
| 1994 - 1996 | Chevrolet Impala | RWD |
| 1993 - 1995 | Chevrolet G30 | RWD |
| 1993 - 1995 | Chevrolet G20 | RWD |
| 1993 - 1995 | Chevrolet G10 | RWD |
| 2009 - 2009 | Chevrolet Express 4500 | 4 X 2 |
| 2006 - 2009 | Chevrolet Express 3500 | RWD |
| 1996 - 2009 | Chevrolet Express 2500 | AWD, RWD |
| 1996 - 2014 | Chevrolet Express 1500 | AWD, RWD |
| 1994 - 2005 | Chevrolet Corvette | RWD |
| 2004 - 2012 | Chevrolet Colorado | RWD, 4WD |
| 1994 - 1996 | Chevrolet Caprice | RWD |
| 1994 - 2002 | Chevrolet Camaro | RWD |
| 1993 - 1996 | Chevrolet C2500 Suburban | RWD |
| 1993 - 1999 | Chevrolet C2500 | RWD |
| 1993 - 1999 | Chevrolet C1500 Suburban | RWD |
| 1993 - 1999 | Chevrolet C1500 | RWD |
| 1993 - 2005 | Chevrolet Blazer | AWD, RWD, 4WD |
| 2002 - 2006 | Chevrolet Avalanche 1500 | RWD, 4WD |
| 2007 - 2008 | Chevrolet Avalanche | RWD, 4WD |
| 1993 - 2005 | Chevrolet Astro | AWD, RWD |
| 2000 - 2000 | GMC Yukon XL 2500 | RWD, 4WD |
| 2000 - 2008 | GMC Yukon XL 1500 | AWD, RWD, 4WD |
| 1993 - 2010 | GMC Yukon | AWD, RWD, 4WD |
| 1993 - 1993 | GMC Typhoon | AWD |
| 1993 - 2004 | GMC Sonoma | RWD, 4WD |
| 1999 - 2001 | GMC Sierra 2500 | RWD, 4WD |
| 2001 - 2003 | GMC Sierra 1500 HD | RWD, 4WD |
| 2007 - 2007 | GMC Sierra 1500 Classic | AWD, RWD, 4WD |
| 1999 - 2013 | GMC Sierra 1500 | AWD, RWD, 4WD |
| 2009 - 2009 | GMC Savana 4500 | 4 X 2 |
| 2006 - 2009 | GMC Savana 3500 | RWD |
| 1996 - 2009 | GMC Savana 2500 | AWD, RWD |
| 1996 - 2014 | GMC Savana 1500 | AWD, RWD |
| 1993 - 2005 | GMC Safari | AWD, RWD |
| 1993 - 1996 | GMC K2500 Suburban | 4WD |
| 1993 - 1998 | GMC K2500 | 4WD |
| 1993 - 1999 | GMC K1500 Suburban | 4WD |
| 1993 - 1999 | GMC K1500 | 4WD |
| 1993 - 2001 | GMC Jimmy | AWD, RWD, 4WD |
| 1993 - 1995 | GMC G3500 | RWD |
| 1993 - 1995 | GMC G2500 | RWD |
| 1993 - 1995 | GMC G1500 | RWD |
| 2004 - 2005 | GMC Envoy XUV | RWD, 4WD |
| 2002 - 2006 | GMC Envoy XL | RWD, 4WD |
| 2002 - 2009 | GMC Envoy | RWD, 4WD |
| 2004 - 2012 | GMC Canyon | RWD, 4WD |
| 1993 - 1996 | GMC C2500 Suburban | RWD |
| 1993 - 1999 | GMC C2500 | RWD |
| 1993 - 1999 | GMC C1500 Suburban | RWD |
| 1993 - 1999 | GMC C1500 | RWD |
| 2009 - 2010 | Hummer H3T | 4WD |
| 2006 - 2010 | Hummer H3 | 4WD |
| 2003 - 2007 | Hummer H2 | 4WD |
| 2007 - 2008 | Isuzu i-370 | RWD, 4WD |
| 2006 - 2006 | Isuzu i-350 | 4WD |
| 2007 - 2008 | Isuzu i-290 | RWD |
| 2006 - 2006 | Isuzu i-280 | RWD |
| 1996 - 2000 | Isuzu Hombre | RWD, 4WD |
| 2003 - 2008 | Isuzu Ascender | RWD, 4WD |
| 1993 - 2004 | Oldsmobile Bravada | AWD, RWD |
| 2004 - 2006 | Pontiac GTO | RWD |
| 1994 - 2002 | Pontiac Firebird | RWD |
| 2005 - 2009 | Saab 9-7x | AWD |
