General Motors have issued several technical service bulletins regarding torque converter clutch shudder issues in their 8-Speed 8L45 and 8L90 transmissions.
GM's solution to this problem is lengthy & complicated. Requiring 20 liters of ATF to be flushed through the system to replace as much fluid as possible, yet still has not corrected the issue in some cases. With these vehicles approaching the end of their limited powertrain warranties, you can expect to see an increase of these in your workshops.
Lubegard has come up with a better, less complicated, and less expensive way to service these transmissions successfully with fewer comebacks and customer complaints.
Lubegard used their state-of-the-art Falex Multispecimen testing platform to develop conditions that caused shudder to occur between an automatic transmission friction plate and steel plate when lubricated with GM's recommended ATF specified in their technical service bulletins.
They then eliminated the shudder under the same conditions by adding Lubegard Platinum High-Performance ATF Protectant (part # 49909 ) to the test ATF at the treat rate of 2 bottles per transmission. An added advantage of the Lubegard Platinum High-Performance ATF Protectant was control and stabilization of the friction at a constant level throughout the tests.
Help your customer avoid the expensive replacement of their OEM ATF by simply adding 2 bottles of Lubegard Platinum ATF Protectant. If your customer insists on the complete fluid replacement you can avoid the recurrence of the TCC shudder with the addition of 2 bottles per transmission of Lubegard Platinum High Performance ATF Protectant.
This problem currently affects 11 different models across Cadilac, Chevrolet and GMC between the model years 2015 and 2019.
When your customer is suffering from TCC shudder and/or slippage, you can help!
