A screen print from GDS 2 or the PicoScope showing the TCC shudder event must be attached to the Repair Order hard copy. Use GDS 2 or the CH-51450 PicoScope to confirm that the concern is TCC shudder and not a tire/wheel vibration or a driveline vibration, for example. Constant throttle input on a smooth grade is needed.Ī shudder condition may also be a chuggle, surge or vibration condition. To ensure TCC shudder is diagnosed correctly, drive the vehicle on a smooth road with transmission sump temperature between 122☏ (50☌) – 158☏ (70☌). The new service procedure addresses shake and/or shudder conditions during light throttle acceleration between 25 and 80 MPH (40 and 128 KM/H) at a steady speed when the transmission is not shifting gears. All GM dealerships should receive the tool kits by the end of March 2019. 10) The tool kit began shipping to dealerships at no charge in late January 2019. The new fluid exchange procedure requires the use of the DT-45096 TransFlow Cooler Flush Machine and DT-52263 Transmission Fluid Exchange Tool Kit. Torque Converter Clutch Shudder and New Mobil 1 Fluid ExchangeĪ new transmission fluid exchange procedure and a new formula of Mobil 1 Synthetic LV ATF HP transmission fluid have been released to address torque converter clutch (TCC) shudder conditions on 8L45 and 8L90 8-speed automatic transmissions (RPOs M5N, M5T, M5U, M5X) in some 2015-2017 Escalade, Yukon 2015-2018 Silverado, Sierra 2015-2019 Corvette 19 ATS, CTS, Camaro and 2017-2019 Colorado and Canyon models. Meet his son, Pete, on this episode of CORVETTE TODAY. It's a beautiful tribute to Reeves Callaway. Pete also touches on the future of Callaway Cars and Corvette and his vision for what's next for the company. Your CORVETTE TODAY host, Steve Garrett, talks with Pete about his upbringing with his Dad, his background and education and how he came up through the company. Pete visits CORVETTE TODAY to talk about his father and the future of Callaway Cars. Reeves' son, Pete, is now the President of Callaway Cars. In July of 2023, the Corvette world and the automotive industry lost a true legend.Reeves Callaway passed away. CORVETTE TODAY # 192: PETE CALLAWAY & CALLAWAY CARS!.Select the forum that you want to visit from the selection below. If this is your first visit, be sure toīefore you can post: click the register link above to proceed.This technical bulletin provides information for new transmission oil to use and a procedure for exchanging the old fluid and adding the new fluid to correct a shake/shudder during light throttle acceleration condition. This condition may be due to Torque Converter Clutch (TCC) Shudder. The condition may be described as if they are driving over rumble strips or a concrete road surface with rough expansion joints. Summary: Some customers may comment that their vehicle is experiencing a shake and/or shudder during light throttle acceleration between 25 and 80 mph (40 and 128 km/h) steady state driving when transmission is not actively shifting gears. GMC TSB 18-NA-355 Make: GMC Number: 18-NA-355 Title: Shake And/Or Shudder During Light Throttle Acceleration Between 25 And 80 Mph (40 And 128 Km/H) At Steady Speed Date: Models:
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