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During the development of the 9TXX, GM received 60 new patents while building 800 prototypes. [4] It was developed from the 6T41 (Gen 3) [5] and designed to occupy approximately the same volume as that prior six-speed automatic and retain that transmission's on-axis design, which aligns all the planetary gears with the crankshaft.
It reports real-time sensor data, component overrides, and Diagnostic Trouble Codes. The specification for this link is as defined by GM's Emissions Control System Project Center document XDE-5024B. [4] [5]
OBD-II PIDs (On-board diagnostics Parameter IDs) are codes used to request data from a vehicle, used as a diagnostic tool.. SAE standard J1979 defines many OBD-II PIDs. All on-road vehicles and trucks sold in North America are required to support a subset of these codes, primarily for state mandated emissions inspections.
In 2001, an updated version — the 4L65-E, was introduced. Five-pinion planetaries, along with a strength-improved output shaft, were improved to withstand the 300+ lb·ft (400+ N·m) of torque of the 6.0 Vortec engine. The 4L70E transmission is the same as a 4L65E with a speed sensor located in the pump.
The "MN4" 4T40E is able to handle vehicles up to 4000 lb (1814 kg) GVWR. The final drive ratio can vary depending on the car's curb weight and engine power output. 3.91, 3.63, 3.29, 3.05, 3.69, and 3.42 are all of the available ratios used in the 4T40 (and 4T45) transmission; Made possible by using combinations selected from 3 different sprocket combinations (32/38, 35/35, 33/37) and 2 ...
GM did not immediately r. ... Chevrolet and GMC vehicles equipped with 8L45 or 8L90 eight-speed automatic transmissions, and sold in the 2015 through 2019 model years. ... 24/7 Help. For premium ...
2005–present 6L80 · 6L90 — 6-speed heavy-duty (used in GM trucks and performance cars) 2014–present 8L 90 — 8-speed heavy-duty (used in GM trucks and performance cars) 2016–present 8L 45 — 8-speed light-duty (used in GM luxury cars) 2017–present 10L80 — Ford-GM 10-speed automatic (used in GM light trucks pickups and related SUVs)
The driver must manually bring the vehicle up to speed and use a button to set the cruise control to the current speed. The cruise control takes its speed signal from a rotating driveshaft, speedometer cable, wheel speed sensor from the engine's RPM, or internal speed pulses produced electronically by the vehicle. Most systems do not allow the ...