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Your cart is empty.The STL-8L90 "Shudder" Solution valve body upgrade from TransLab Engineered by Superior Transmission parts is the solution to eliminate shudder or shaking caused by a valve in the 8L valve bodies. This fix also alleviates valve body breakage.
Customer
Reviewed in the United States on February 8, 2025
This "shudder solution" kit is perfect! It works just as advertised, it really does improve the shuddering as advertised. I'd recommend this kit to anyone in a heartbeat. Overall, it is of premium quality, with a clear set of instructions. Great product!
It's Me Again...
Reviewed in the United States on February 12, 2025
This shudder fix kit worked wonders in my SUV, of course I did a fluid and filter change at the same time so I'm sure that went a long way too.
S
Reviewed in the United States on January 11, 2025
The Superior 8L45 8L90 TransLab Engineered Shudder Solution Valve Body Upgrade (STL-8L90) is a high-quality, effective upgrade for resolving transmission issues in GM 8L valve bodies. Designed specifically to eliminate shudder and address valve body breakage, this kit ensures smoother performance and enhances the durability of your vehicle’s transmission system.Key FeaturesEliminates ShudderExpertly engineered to resolve torque converter shudder caused by valve issues in 8L45 and 8L90 transmissions, ensuring smoother operation.Prevents Valve Body DamageStrengthens the valve body to mitigate breakage, extending the lifespan of the transmission system.Detailed Installation InstructionsIncludes comprehensive, professionally crafted instructions to guide users through the installation process, even for those with limited technical experience.High-Quality ComponentsManufactured to meet professional standards, ensuring reliability and consistent performance.Fluid CompatibilityCritical to pair the installation with the correct transmission fluid for optimal results and prolonged performance.User Feedback HighlightsEffective Shudder Elimination: Users reported that this kit resolved persistent shuddering issues when paired with the correct transmission fluid.High-Quality Components: The kit’s components are durable and professionally crafted, making it a reliable long-term solution.Importance of Proper Diagnosis: Feedback suggests that if this kit does not resolve shuddering, the issue likely lies with a failing torque converter rather than the valve body.Installation NotesEnsure Correct Diagnosis: Verify that the shuddering issue is related to the valve body before installing the kit.Fluid Selection: Use only GM-approved transmission fluid when refilling the 8-speed transmission after installation.Follow Instructions Carefully: Adhere to the detailed installation guide provided with the kit to ensure proper functionality.Final VerdictThe Superior STL-8L90 Shudder Solution Valve Body Upgrade is an essential product for resolving shudder and enhancing the durability of GM 8L transmissions. When paired with the correct transmission fluid and installed correctly, this kit offers a reliable and cost-effective solution to common transmission issues.Rating: 4.9/5Highly recommended for preventative maintenance and addressing shudder in 8L45 and 8L90 valve bodies.
Chris Fletcher
Reviewed in the United States on December 2, 2024
Bone stock 8l90, did not work for me.Caused severe hunting, and tcc apply/disengagement constantly while cruising at steady speed from 15-60mph.Unable to reach company for tech support. By the time I had removed this from trans, was past return window. Lesson learned
Aliviana York 2.0
Reviewed in the United States on December 14, 2024
The contents of this kit are professionally made.It has detailed instructions included.It is critical that you use the correct fluid when refilling the GM 8 speed transmission.If this kit doesn't work your converter is probably toast.
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