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Like earlier automatics, the 6L80 features one line pressure tap available for testing and diagnostic purposes. Indirectly affects TCC control and shift control. The 4L80E is a very large, heavy transmission but, like its original TH-400 cousin, it can absorb and transmit an enormous amount of engine torque. A rebuilt 10L80 will only have a certain number of components that get replaced. So my suggestion is to not subject the lockup to that amount of abuse. While its true that, many times, the root cause of a converter failure lies in the transmission, in this case, there is ample evidence that the opposite is true: an inherent torque converter problem might be the root cause of a lot of the transmission failures. It can also be found in the Lincoln Navigator. Shift the transmission to Neutral. GM 6L80 transmission - Wikipedia It employs an even deeper First gear ratio of 4.02:1 with tighter gear splits but does not apply an overdrive for subsequent gears. If the warmer is not mounted to the transmission, refer to factory information to locate it. In contrast, when the 10-speed transmission is at heavy or max throttle, the small steps keep the engine closer to the horsepower peak for the best performance. Intermittent Fail Safe, Codes, Related Concerns and Solutions, The ZF 8-Speed Transmission Fluid and Filter Change, Tackling Clutch Failure in the GM 6L80/90, Change is in the Air Installing Updated Calibrations. Brake pedal position: Directly affects shift scheduling and TCC scheduling, Air/fuel management adaptive values reset. Quick 4 Stand-Alone Transmission Control System Beginning in 2010, all 2500 and 3500 Express / Savana with a 4.8L or 6.0L engine used the 6L90 transmission. 6L80E Specs The 6L80 is a robust transmission and can handle a ton of power. The transmission typically accepts a 6.3 quart fill. Brake very gently to a complete stop and hold the foot brake for five (5) seconds. The taper may exist so that the clutch surface goes flat when the cover is welded together were not sure. Everything You Need To Know About GM Automatic Transmissions You will need to ship your transmission to us for the rebuild. 10L80 Transmission Specs General - 10-speed automatic with integral turbine clutch torque converter Application - RWD & 4WD / AWD RPO Code - MF6 Production Began - 2017 Case - 1 piece aluminum with integrated bell housing Torque Converter - 260 mm with Electronic Controlled Capacity Clutch (10L80 ECCC) If the transmission fluid is discolored or has evidence of debris in the fluid, it would be recommended to replace the torque converter and flush the system to complete this repair. The 6L80 was approved for use in these vehicles weighing up to 8600 lbs. 1) Centerline of engine and transmission are the same on LS block and all trans that mount to it. Unlike the 4L60E and 4L80E, the 6L80 is not always referred to as with the E on the end because its been over 25 years since the last non electronic GM transmission has been in production. Check out delicious pictures and movies from Peter Mrup, Dennis Andersson and Svein Pedersen. Engine torque rating increases minimally, but the output torque rating of the transmission jumps up by nearly 220 ft. lbs. The original first three gear ratios are in fact still the same as the TH-400.