As a key player in the functionality of automatic transmission systems—alongside the planetary gears, clutches, and torque converter— the valve body functions as the control center of the gearbox.

If you're curious about some of the issues that can cause a transmission to shift hard, ... When it comes to your transmission, we've mentioned solenoids and the transmission control module, ...

Having a manual transmission comes with extra maintenance, and if yours has a stiff gear shift, it's a cause for concern. Here are the most likely culprits.

Chevy LCF 3500 And 4500 Recalled For Incorrect Transmission Control Module Calibration . By Trey Hawkins. November 23, ... the transmission shift quality and timing has the potential to be degraded.

The shift interlock solenoid works with the transmission control module (TCM) and is responsible for ensuring that your car stays in park unless the brake pedal is depressed.

To fix the issue, the automaker worked to replace the transmission valve body separator plate and reprogrammed the powertrain control module. Mercedes-Benz GLE 450 and GLS 450 Mercedes-Benz ...

The investigation concerns 2013 through 2018 model year pickups that had received a remedy under two recall campaigns from ...

These sensors work in tandem to send the powertrain control module (i.e., the computer that manages the engine and transmission) the speed difference between the engine crankshaft and the ...

Simulating shift points also wouldn't require much additional hardware, according to Stellantis. Sensors would tell a control module to temporarily alter motor torque output at points when an ...

Ford is recalling more than 550,000 F-150 pickups in the United States because of an issue that can cause the transmission to suddenly and unexpectedly, at any speed, shift down to first gear.