![]() ![]() ![]() 19417577 is the same new formula in quart bottles. This was used at the beginning of the initial rollout. 19417904 is the part number for when its dispensed from a 55 gallon drum. Does anyone know which fluid is correct or if they might be the same They are the same. I wasnt in a major rush since I figured GMPP warranty (extended to 2024) would cover any issues. They specifically listed it being done for bulletin 18-NA-355. 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. If looking at used 17+ V6/8spd trucks, ask if TSB 18-NA-355 with 2/19 revision or later has been done. When Service Bulletin 18-NA-355 was released, I contacted 3 dealerships in San Diego, and they all claimed they didnt know about the TSB and/or they said 'well check into it', but of course- I never heard back. Bulletin No.: 18-NA-355 August, 2019 Note: DO NOT add additional transmission fluid until the 4 quarts of oil have been removed from the transmission (Reducing fluid level in the TransFlow from 12 8). 355 5600 RPM Horsepower V8, Ecotec3, 53 Liter Engine Select See Full Specs. Talking to the tech he stated that according to the GM field tech that their were reports of shift and valves solenoids that were dirty in the valve bodys. This condition may be due to Torque Converter Clutch (TCC) Shudder. 18 Shop Now Key specs Base trim shown Pickup Truck View similar vehicles 20. The dealer checked it and verified my complaint and even though it already had the new fluid they did the triple flush bulletin 18-NA-355 and told me to drive it for 700 miles. The condition may be described as if they are driving over rumble strips or a concrete road surface with rough expansion joints. Note: a copy of the GM service bulletin 18-NA-355 can be found online. 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. According to TSB (Technical Service Bulletin) 18-NA-355, the latest update addresses torque converter clutch (TCC) shudder conditions on 8L45 and. Cadillac TSB 18-NA-355 Make: Cadillac 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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