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SKU:105740-17K
Suncoast Oversized TCC Regulator & Boost Valve Kit
Suncoast Oversized TCC Regulator & Boost Valve Kit
Description
In GM Gen. 2 10L60, 10L80, 10L90 and Allison 10L1000 transmissions, the TCC regulator valve controls the application and release of the torque converter. The boost valve and sleeve assembly receives signal fluid that forces the valve to shuttle to its regulating position. In this position, the torque converter apply circuit is open to the secondary line and the torque converter release circuit is vented. This moves the converter into lockup state. Once the signal fluid is removed from the circuit, the TCC regulator valve returns to its install position where the torque converter apply circuit is disconnected from the secondary line and the torque converter release circuit is pressurized. This returns the converter to its released state.
Bore wear around the TCC regulator valve can negatively affect torque converter lockup. Bore wear around the valve reduces converter apply flow, converter release flow and cooler flow. Boost sleeve wear results in signal fluid loss and prevents the torque converter lockup.
Reconditioning the bore and installing Sonnax oversized TCC regulator and boost valve kit 105740-17K corrects the lockup issues along with restoring the proper hydraulic integrity of the circuit.
- Hardcoat anodized aluminum valve combats premature wear
- Highly wear-resistant valve sleeve increases life of part
- Oversized valve maintains OE functions and pressures
Fitments
2025 Chevrolet Silverado 2500 HD
2025 Chevrolet Silverado 3500 HD
2025 GMC Sierra 2500 HD
2025 GMC Sierra 3500 HD
2024 Chevrolet Silverado 2500 HD
2024 Chevrolet Silverado 3500 HD
2024 GMC Sierra 2500 HD
2024 GMC Sierra 3500 HD
2023 Chevrolet Silverado 2500 HD
2023 Chevrolet Silverado 3500 HD
2023 GMC Sierra 2500 HD
2023 GMC Sierra 3500 HD
2022 Chevrolet Silverado 2500 HD
2022 Chevrolet Silverado 3500 HD
2022 GMC Sierra 2500 HD
2022 GMC Sierra 3500 HD
2021 Chevrolet Silverado 2500 HD
2021 Chevrolet Silverado 3500 HD
2021 GMC Sierra 2500 HD
2021 GMC Sierra 3500 HD
2020 Chevrolet Silverado 2500 HD
2020 Chevrolet Silverado 3500 HD
2020 GMC Sierra 2500 HD
2020 GMC Sierra 3500 HD
2025 Chevrolet Camaro
2025 Chevrolet Silverado 1500
2025 Chevrolet Suburban
2025 Chevrolet Tahoe
2025 GMC Sierra 1500
2025 GMC Yukon
2024 Chevrolet Camaro
2024 Chevrolet Silverado 1500
2024 Chevrolet Suburban
2024 Chevrolet Tahoe
2024 GMC Sierra 1500
2024 GMC Yukon
2023 Chevrolet Camaro
2023 Chevrolet Silverado 1500
2023 Chevrolet Suburban
2023 Chevrolet Tahoe
2023 GMC Sierra 1500
2023 GMC Yukon
2022 Chevrolet Camaro
2022 Chevrolet Silverado 1500
2022 Chevrolet Suburban
2022 Chevrolet Tahoe
2022 GMC Sierra 1500
2022 GMC Yukon
2021 Chevrolet Camaro
2021 Chevrolet Silverado 1500
2021 Chevrolet Suburban
2021 Chevrolet Tahoe
2021 GMC Sierra 1500
2021 GMC Yukon
2020 Chevrolet Camaro
2020 Chevrolet Silverado 1500
2020 Chevrolet Suburban
2020 Chevrolet Tahoe
2020 GMC Sierra 1500
2020 GMC Yukon
2019 Chevrolet Camaro
2019 Chevrolet Silverado 1500
2019 Chevrolet Suburban
2019 Chevrolet Tahoe
2019 GMC Sierra 1500
2019 GMC Yukon
2018 Chevrolet Camaro
2018 Chevrolet Suburban
2018 Chevrolet Tahoe
2018 GMC Yukon
2017 Chevrolet Camaro
Instructions
Specifications
SKU: 105740-17K
GTIN: 840385619714
Manufacture Name: Suncoast Performance
Shipping Weight: 1 lb
Shipping Length: 4 in
Shipping Width: 4 in
Shipping Height: 4 in
EO Number:
Cross Reference #
Warranty
California Proposition 65 Warning
California Proposition 65 Warning - P65warnings.ca.gov
105740-17K
Suncoast Oversized TCC Regulator & Boost Valve Kit
In GM Gen. 2 10L60, 10L80, 10L90 and Allison 10L1000 transmissions, the TCC regulator valve controls the application and release of the torque converter. The boost valve and sleeve assembly receives signal fluid that forces the valve to shuttle to its regulating position. In this position, the torque converter apply circuit is open to the secondary line and the torque converter release circuit is vented. This moves the converter into lockup state. Once the signal fluid is removed from the circuit, the TCC regulator valve returns to its install position where the torque converter apply circuit is disconnected from the secondary line and the torque converter release circuit is pressurized. This returns the converter to its released state.
Bore wear around the TCC regulator valve can negatively affect torque converter lockup. Bore wear around the valve reduces converter apply flow, converter release flow and cooler flow. Boost sleeve wear results in signal fluid loss and prevents the torque converter lockup.
Reconditioning the bore and installing Sonnax oversized TCC regulator and boost valve kit 105740-17K corrects the lockup issues along with restoring the proper hydraulic integrity of the circuit.
- Hardcoat anodized aluminum valve combats premature wear
- Highly wear-resistant valve sleeve increases life of part
- Oversized valve maintains OE functions and pressures
Suncoast Oversized TCC Regulator & Boost Valve Kit