Product Details

3-4 clutch boost springs for the GM 700R4 and 4L60E automatic transmissions

• Brand: Sonnax
• Part number: 77763-01
• Covered models: 700R4, 4L60E, 4L65E, 4L70E
• Makes: Buick, Cadillac, Chevrolet, GMC, Hummer, Isuzu, Oldsmobile, Pontiac, Saab
• Year range: 1988-up

Complaint:

• 3-4 Clutch boost spring collapse
• 3-4 Clutch boost springs inefficient when overheated.

Cause:

Springs collapse and lose strength when overheated due to 3-4 clutch failure.

Correction:

Install these precision manufactured, direct replacement boost springs.

The 77763-01 boost springs offer a low cost, direct replacement alternative to the OE springs. Engineered for the application, the 77763-01 boost springs are precision manufactured from high quality spring materials.

• Low-cost direct replacement
• Precision manufactured.
• Made from high quality spring material.

The Sonnax 77763-01 3-4 clutch boost spring works in all makes of this transmission. GM, Cadillac, Chevrolet, GMC, Pontiac, Oldsmobile, Hummer, Isuzu, Saab, including:

Buick

• Rainier, 2004-2007
• Roadmaster, 1992-1996

Cadillac

• Brougham, 1994-1997
• Escalade, EXT, ESV 1999-2006
• Fleetwood, 1994-1997

Chevrolet

• Astro Van, 1988-2005
• Avalanche, 2002-2008
• Blazer, 1988-2005
• C1500, some C2500, 1993-1999
• Camaro, 1988-2002
• Caprice, 1988-1996
• Corvette, 1988-2005
• Impala SS, 1994-1996
• S10, 1993-2004
• Silverado Truck, 1988-2013
• SSR, 2003-2007
• Suburban, 1988-2013
• Tahoe, 1993-2013
• Trailblazer, 2001-2009
• Van, 1988-2013

GMC

• Canyon, 2004-2012
• Colorado, 1994-2012
• Envoy - XUV – Denali, 2001-2010
• K1500, Some K2500, 1993-1999
• Safari Van, 1988-2005
• Sierra Truck, 1988-2013
• Sonoma, 1993-2004
• Syclone 1991-1993
• Typhoon 1991-1993
• Van, 1988-2013
• Yukon, 1993-2013

Hummer

• H2, 2003-2007
• H3, 2006-2011

Isuzu

• Ascender, 2003-2009
• Hombre, 1996-2000
• Pickup, I280, I350, I290, I370 2006-2009

Oldsmobile

• Bravada, 1991-2004
• Custom Cruiser Wagon, 1988-1992

Pontiac

• Firebird & Trans Am, 1988-2002
• GTO, 2004-2006

Saab

• 9-7, 2005-2009

These transmissions are part of the Turbo-Hydramatic series and are also known as: 700R4, 4L60, 700-R4, TH700-R4, MD8, THM700R4, THM700-R4, 4L60E, 4L60-E, 4L65E, 4L65-E, 4L70E, 4L70-E, 4L75E, 4L75-E, M30, M32, M70.

These 3-4 clutch springs work in all models and years of this transmission, including: 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, and 2013.