Product Details

Sonnax billet aluminum, pinless accumulator piston set for the GM 4L60E automatic 4-speed overdrive transmission.

• Fits the 4L60E, 4L65E, 4L70E, and 4L75E
• 1992-up
• Made in: USA

This kit comes with the following parts:

• Sonnax 77987-01K forward piston
• Sonnax 77998-03K 1-2 & 3-4 piston (Qty 2)

The 4L60E and its variants were in production from 1992-2013 and can be identified by the square 16 bolt oil pan and 4 forward gears.  1992-1993 are cross-over years, so your vehicle could have the earlier non-electronic transmission instead.  If unsure of your model, the 4L60E can be differentiated by looking at the wire plug going into the transmission. The non-electric shift will have a square wire plug with 2-4 wires. The 4L60E will have a round plug with 11 wires.

The 4L60-E was found in the full range of General Motors vehicles including Buick, Cadillac, Chevrolet, GMC, Hummer, Isuzu, Oldsmobile, Pontiac, and SAAB.

These transmissions can be found in the following vehicles; however, you should double check your application with the 16 bolt pan count. It is common for similar vehicles to have multiple transmission options available from the factory.

Buick

• Rainier, 2004-2007
• Roadmaster, 1994-1996

Cadillac

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

Chevrolet

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

GMC

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

Pontiac

• Firebird & Trans Am, 1993-2002
• GTO, 2004-2006

Saab

• 9-7, 2005-2009

This pinless accumulator piston kit fits the following years: 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, and 2013.

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