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GMC Sonnax Transmission Company Parts and Accessories

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Results 1 - 5 of 5

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Sonnax Thrust Bearings

Sonnax thrust bearings are replacements for your worn automatic transmission bearings to aid in smooth operation and noise reduction. The bearings act as a guide to help limit any axial movement which can hinder performance. Manufactured to exceed OE specifications for superior quality even under extreme conditions, order the Sonnax thrust bearings best suited for your application.

5.0 out of 5 stars ( 4 )

$11.20

$18.47

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Sonnax Pinless Accumulator Piston Kits

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.

5.0 out of 5 stars ( 18 )

$10.86

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Sonnax Shift Cable Mounting Brackets

Transmission cases made in 1994 and 1995 have neutral safety switch mounting holes, but do not have the top mount shifter bracket holes. That's where these Sonnax shift cable mount brackets come into play, by allowing installation of the 1994 and 1995 transmissions or cases into 1996–97 vehicles that originally had case mounted shifter brackets. Additionally, if a late case has become damaged or has broken top mount bosses, these Sonnax shift cable mounting brackets can be used as an alternative to allow you to correctly mount the shifter cable and allow the reuse of the case.

5.0 out of 5 stars ( 1 )

$18.99

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Sonnax Accumulator Pistons

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.

5.0 out of 5 stars ( 2 )

$17.84

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Sonnax Isolator Sleeve Kits

In listed GM transmissions, 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. Sonnax isolator sleeve kits (77754-ISO) in combination with Sonnax TCC regulator valve kit 77754-03K or 77754-04K allow you to restore hydraulic integrity of the apply circuit. Sleeves are manufactured from highly wear-resistant aluminum to provide full support for the valve and prevent side loading. Includes retaining ring and sleeve.

Not Yet Reviewed

$12.96

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