4L60E 4L65E 4L70E Transmission Isolator Sleeve Valve Kit Sonnax 77754-ISO
Severe wear of the TCC regulator valve bore from the OE valve allows regulated converter apply pressure to exhaust. This is a primary cause for a TCC-related 1870 slip code and overheated converters. Exhausting apply pressure also diminishes line pressure, which results in burnt clutches. Excessive wear at the isolator valve bore reduces TCC apply pressure. The Sonnax isolator sleeve kit 77754-ISO in combination with Sonnax TCC regulator valve kit 77754-03K or 77754-04K allows you to restore hydraulic integrity of the apply circuit. Sleeve is manufactured from highly wear-resistant aluminum to provide full support for the valve and prevent side loading.
- Retaining Ring
- Sleeve
APPLICATIONS
Hummer (H3)(H3T) 2006-2010 L5 3.7L V8 5.3L
Buick Rainer 2004-2007 L6 4.2L V8 5.3L
Cadillac Escalade, ESV, EXT 1999-2007 V8 5.3L 5.7L 6.0L
Fleetwood, Brougham 1993-1996 V8 4.9L 5.7L
Limo 1993-1996 V8 4.9L 5.7L
Chevrolet Asto Van, Safari 1995-2007 V6 4.3L
Avalanche 2001-2009 V8 5.3L
Blazer, Jimmy 1993-2007 L4 2.2L L6 4.2L V6 4.3L V8 5.3L
Envoy, Trailblazer 1993-2009 L4 2.2L L6 4.2L V6 4.3L V8 5.3L
Camaro 1994-2002 V6 3.4L 3.8L V8 5.7L
Caprice, Wagon 1993-1996 V6 4.3L V8 5.0L 5.7L
Colorado, Canyon 2004-2011 L4 2.8L L5 3.5L L4 2.9L L5 3.7L V8 5.3L
Express, Savana 1500-2500 1996-2011 V6 4.3L V8 4.8L 5.3L 5.7L
S10, S15, Jimmy, Sonoma 1993-2004 L4 .4L 2.5L V6 4.3L
Silverado, Sierra 1500-3500 1995-2010 V6 4.2L V6 4.3L V8 4.8L 5.0L 5.L V6 5.4L 5.7L 6.0L
Tahoe, Yukon 1993-2009 V8 4.8L 5.0L 5.3L 5.7L
Isuzu Ascender 2003-2009 L6 4.2L V8 5.3L 5.4L
Hombre 1997-2000 L4 2.2L V6 4.3L
i280 2006 L4 2.8L
i290 2007-2009 L4 2.9L
i350 2006 L5 3.5L
i370 2007-2009 L5 3.5L
Oldsmobile Bravada 1993-2004 L6 4.2L V6 4.3L
Pontiac Firebird 1994-2002 V6 3.4L 3.8L V8 5.7L
GTO 2004 V8 5.7L
SAAB 9-7, 9-7X 2005-2009 L6 4.2L V8 5.3L
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