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Sonnax servo release check valve kits are unique solutions. Since the GM 4L60 (700-R4) and 4L60-E Series transmissions were introduced, they have had inadequate metering of 2nd gear band servo release oil resulting in 3-4 clutch pack failure. The 3-4 clutch pack and 2nd gear band are just not properly synchronized. Sonnax servo release check valve kits combine an orifice with a ball check valve to resolve these issues and successfully extend the life of 3-4 clutches, and improve the 2-3 shift feel. Other benefits: * Provides sufficient exhaust so that 3-2 downshifts are smooth * Calibrates 3-4 clutch feed orifice without creating shift concerns
( 4 )
$10.60
Summit Bucks
Sonnax 3rd accumulator check ball and seat sets prevent circuit leaks, stop 3-2/2-3 timing issues, and prolongs the life of the 3-4 clutch. Wear or debris can prevent the ball and seat from correctly sealing the 3-4 apply circuit. Sonnax sets will solve the sealing problems for improved performance.
( 4 )
$9.12
Summit Bucks
OE rear stator support bushings have a tendency to wear-out prematurely due to sub-optimal material composition. This wear can lead to bushing failure, loss of correct pressure to the E-clutch, and gear ratio or solenoid codes. Sonnax rear stator support bushings have an upgraded material composition to restore worry-free operation, superior wear characteristics, and eliminate premature deterioration.
( 2 )
$7.16
Summit Bucks
Sonnax sun gear bushings will greatly benefit your automatic transmission rebuild. These high-quality bronze and bi-metal wedding band style components are direct OE replacements that help restore the alignment between the front sun gear and input shaft. Order the bushings designed for fitment with your transmission application.
( 4 )
$4.65
Summit Bucks
Properly reducing your transmission endplay to avoid flare, slip, or both requires the use of shims. Sonnax rear reaction carrier support shims are available in a variety of sizes for multiple interior locations to provide you with the ability to reduce rear unit endplay. Tighten things up to proper specifications with the set of Sonnax rear reaction carrier support shims recommended for your transmission application.
Not Yet Reviewed
$7.61
Summit Bucks
OE front stator support bushings in automatic transmissions tend to wear-out prematurely due to their sub-optimal material composition. Replacement front stator support bushings from Sonnax are made with upgraded materials designed to outperform OE bushings—and provide superior wear characteristics to eliminate early deterioration. Restore critical clearances and resist untimely wear with these quality replacement front stator support bushings from Sonnax. Important note: In some cases it may be necessary to hone the bushing I.D. slightly for proper fit due to stator shaft variations.
( 1 )
$6.37
Summit Bucks
Worn babbit pump bushings in your GM Powerglide, 350, 400, or Allison AT540 transmission can allow the converter hub and inner pump gear to move off-center, thus causing damage to pump gears and the pump housing crescent. You can replace the worn originals with automatic transmission oil pump bushings from Sonnax. These direct replacements have tighter tolerances for improved fit over OE units, and they're lined with highly wear-resistant PTFE to help maximize the life of the older style and increasingly rare pumps. Order the bushings recommended for your application.
( 2 )
$5.93
Summit Bucks
Sonnax 3-4 clutch boost springs offer a low-cost, direct replacement alternative to the OE springs in GM 4L60, 4L60-E, 4L65-E and 4L70-E automatic transmissions. Engineered for the application, the 77763-01 boost springs are precision manufactured from high-quality spring materials.
( 1 )
$9.19
Summit Bucks
Sonnax front endplay shims help solve the issue of too much front endplay. Whether it's due to various components wearing over time or the direct result of modifications—front endplay that has strayed from precise specifications can lead to costly repairs and/or replacements. Tighten things up to proper specifications with the set of Sonnax front endplay shims recommended for your transmission application.
Not Yet Reviewed
$6.12
Summit Bucks
Sonnax pump slide pivot pins are designed as direct replacements for your worn-out components. They're made from through-hardened steel to prevent excessive wear. A worn-out pump slide pivot pin can allow oil to leak past it, resulting in low or high line pressure. These pins help you to overcome that problem, and are available in solid-, grooved-, or punch-styles. Restore the hydraulic integrity of your transmission with the Sonnax pump slide pivot pin designed for your application.
Not Yet Reviewed
$8.11
Summit Bucks
Noticing some forward slip and/or delayed engagement with your GM automatic transmission? Sonnax accumulator pistons are direct replacements for OE plastic pistons and restore sealing integrity at the pin bore. The aforementioned issues, as well as burnt clutches and bands can be caused by loss of fluid. Deterioration at older aluminum piston pin bores due to repeated reciprocation and/or cracks in plastic accumulator pistons may be the cause. Avoid a costly valve body replacement by ordering a Sonnax accumulator piston.
( 2 )
$7.91
Summit Bucks
Sonnax replacement accumulator seal kits contain five sets of seals to refresh the sealing capabilities of their pin-less accumulator kits. Each accumulator takes one D-ring and one seal. The D-rings are made from Viton® and the seals are PTFE. Improve sealing characteristics with Sonnax replacement accumulator seal kits.
Not Yet Reviewed
$9.78
Summit Bucks
If your GM transmission is showing wear of the bore plug in the forward and reverse abuse valve bores that can allow valuable oil pressure to exhaust, Sonnax forward and reverse abuse bore plugs are the solution. They feature a drop-in design with an increased diameter that restores proper clearance in the valve body and no tools are required for installation. These plugs are used in two locations in the valve body: separating the forward abuse and low overrun valves and separating the reverse abuse and 3-2 downshift valves. Put an end to unnecessary oil loss with Sonnax forward & reverse abuse bore plugs. These products are designed to help resolve: * Delayed reverse * Burned 3-4 clutch and bind-up * Burnt low/reverse clutch * Burned 2-4 band
( 1 )
$8.34
Summit Bucks
Sonnax return springs are available in a variety of styles to assist in your automatic transmission rebuild. Replacement part types include high clutch return springs, pump slide springs, detent springs, reverse clutch return springs, and more. They're machined from quality materials for long-lasting performance, and can be ordered individually or in larger quantities. Select the springs required for your specific transmission application.
( 4 )
$7.98
Summit Bucks
ACDelco GM Genuine Parts automatic transmission turbine shaft fluid sealing rings are manufactured to be an exact replacement for your vehicle. Genuine OE parts are recommended in order to deliver peace of mind that the fit, form, and function are of the highest standards. Get the factory-style components you need from ACDelco GM Genuine Parts. Order the sealing rings designed for your application.
Not Yet Reviewed
$9.99
Summit Bucks
ACDelco GM Genuine Parts includes all the automatic transmission rebuild components you need to return your tranny to optimum performance. They are designed, engineered, and tested to rigorous standards, and are backed by General Motors. From the smallest to the biggest pieces, you can trust reliable ACDelco parts to restore, repair, and renew your GM.
( 12 )
$3.50
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$10.99
Summit Bucks
Sonnax valve body check balls are lightweight orbs that seal better. Manufactured from tough, wear-resistant imidized plastic, these check balls conform to the separator plate ball seats, creating a good seal. Steel balls are heavy and hard, causing wear on your separator plate seats from repeated high impact, while elastomer rubber ones wear easily, reducing their size and sealing ability. For excellent results from your valve bodies, service them with Sonnax imidized check balls.
( 12 )
$5.67
Summit Bucks
ACDelco GM Genuine Parts replacement bolts are available for a variety of applications, including transmission torque converter housings. Installing factory-recommended hardware helps to ensure the same performance, durability, and service life you expect from General Motors.
( 14 )
$4.99
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$7.99
Summit Bucks
ACDelco transmission rear seals will restore a fluid-tight barrier for your drivetrain. These flexible output shaft gaskets feature original equipment designs that will fit your ride with the same factory performance, durability, and service life you expect. The seals are available in a variety of styles and materials—for compatibility with countless transmission models.
( 11 )
$4.99
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$7.99
Summit Bucks
ACDelco flywheel housing inspection covers are original equipment replacements for your GM vehicle. They are designed to meet or exceed factory specs, which means that the fit and function will be the same as the worn or damaged cover you are replacing. Order the model tailored for your vehicle application.
( 4 )
$9.99
Summit Bucks
Wear at the piston pin bore surface can result in poor shift quality and burnt clutches and bands. Sonnax pinless accumulator piston kits prevent pin bore leakage. They're also longer to stabilize the piston and prevent piston cocking. They feature dual seals to stabilize and completely seal the bore, and steel balls to plug the existing pin bore. Fluid loss through the piston pin bore will no longer be an issue when you invest in Sonnax piston kits.
( 17 )
$8.94
Summit Bucks
Restore proper shift feel with Sonnax accumulator springs. The replacement piston release springs have the identical performance specifications as the purple OE accumulator springs but are made of high-strength material to ensure lasting spring life and reduce spring relaxation. Order the spring set designed for compatibility with your automatic transmission make and type.
( 6 )
$9.90
Summit Bucks
ACDelco GM Genuine Parts transmission components are validated by General Motors engineering to work with GM transmissions. ACDelco torque converter bolts, like other hard parts, cooler lines and fittings, friction and gaskets, valve bodies, switches, electronics, bearings, mounts, and all other related parts have design enhancements to reflect updates, upgrades, and Technical Service Bulletins. They are competitively priced to help you keep your GM car, truck, or SUV all GM.
( 1 )
$3.99
Summit Bucks
ACDelco spark plug wire looms keep spark plug wires in place to prevent them from contacting exhaust manifolds and other underhood hot spots. This avoids heat damage to the insulation. Spark plug wire retainers also organize the wires in the engine compartment for easy replacement and an orderly appearance. They're available for a variety of makes and models.
( 2 )
$1.99
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