Product Details

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Sonnax Zip Kit for the GM 6L45, 6L50, 6L80, and 6L90 automatic transmission.

Product specifics:

• Brand: Sonnax
• Part number: 6L45-6L90-ZIP
• Covered models: 6L80, 6L45E, 6L50E, 6L80E, 6L90E.
• Makes: GM, BMW, Buick, Cadillac, Chevrolet, GMC, Hummer, and Pontiac
• Year range: 2006-up
• Instructions included: Yes.
• Transmission removal is required for full installation.
• No special tools are required for installing these parts.

Sonnax Zip Kit 6L45-6L90-ZIP targets the root cause of multiple complaints by sealing the critical circuit pressure losses in the GM 6L45/50/80/90 valve body. The kit contains uniquely designed parts to prevent the loss of pressures within the main line, clutch apply control, solenoid feed and lockup control circuits. The kit also seals multiple circuits known to suffer from end plug leakage or poor checkball sealing.

The Zip Kit quick guide provides clear and easy instructions on one sheet to get the unit sealed up and back on the road fast. In addition to general rebuilding tips and technical information, the technical booklet included in this kit contains vacuum testing information and locations at other key areas of the valve body.

Shift Kit features:

• Drop-in Zip Valve™ parts install quickly and easily, no reaming or special tools required.
• Uniquely designed parts address root causes of valve body complaints by sealing critical pressure circuits.
• Detailed technical booklet included with in-depth rebuild and inspection tips for comprehensive valve body repair.

Includes:

• Pressure Regulator Valve Kit
• Boost Valve & Sleeve
• Clutch Select Valve Spring Kit
• Compensator Valve, Sleeve & Spring
• TCC Regulator Valve Kit
• O-Ringed End Plugs
• Actuator Feed Limit Valve Kit
• Center Support Seal Kit
• Vacuum Test Nut
• Checkballs (8) .250" dia.

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

BMW (18 bolt transmission pan)

• 116i, 118i, 120i, 125i, 128i, 130i 2007-2012
• 316i, 318i, 320i, 323i, 325i, 325xi, 328i, 328xi, 330i, 330xi 2007-2009
• X3 2.5si, 3.0i, 3.0si 2007-2011

Buick

• Electra 2010-2011
• Park Avenue 2010-2011

Cadillac

• ATS 4cyl 2012-2013
• ATS V6 2012-up
• CTS 2.8L 2007
• CTS 6.0L 2007-2009
• CTS V6 2007-up
• Escalade, EXT, ESV 2007-2015
• SRX Wagon 2007-2009
• STS 2007-2012
• STS-V V8 Supercharged 2006-2011
• XLR 2006-2009

Chevrolet

• Avalanche 1500 2009-2012
• Camaro V8 naturally aspirated 2009-2015
• Caprice 2009-2013
• Colorado 5.3L 2008-2012
• Corvette 2007-2014
• Express Van 1500 2009-2017
• Silverado Truck 1500, 2500 2008-2021
• Suburban 1500 2009-2020
• Tahoe 2009-2020

GMC

• Canyon 5.3L 2008-2012
• Savana Van 2500 2009-2017
• Sierra Truck 1500, 2500 2008-2021
• Yukon 2009-2020
• Yukon XL 1500 2009-2020
• Yukon Denali 2007-2015

Hummer

• H2 2008-2010
• H3 5.3L 2008-2011

Pontiac

• G8 V8 2008-2010

These transmissions are part of the Turbo Hydramatic or Hydra-Matic series and also known by the following codes and part numbers: 6L45, 6L45E, 6L45-E, MYA, 6L50, 6L50E, 6L50-E, MYB, 6L80, 6L80E, 6L80-E, MYC, 6L90, 6L90E, 6L90-E, MYD.

This transmission 6L80 6L90 Sonnax Zip shift kit fits the following years: 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, and 2017, 2018, 2019, 2020, and 2021.