Possible causes of a vehicle with an automatic transmission shifting gears that can be heard:
* Mechanical noise:
* Gear shifting is controlled by a solenoid, which may make a clicking or knocking noise.
* Transmission gears engage and disengage, which may cause grinding or clunking noises.
* Worn transmission components may cause shifting noise.
* Liquid noises:
*Low transmission fluid levels can cause noise due to lack of lubrication.
* Worn or clogged transmission fluid can create bubbles or foam, resulting in noisy shifting.
*Electronic noise:
* The sensors or solenoids that control gear shifting may make a whirring or clicking sound if they are faulty.
* The Transmission Control Module (TCM) may generate noise during transmission processing and shift control.
Possible reasons:
*Worn Components: Over time, transmission parts can wear out, causing shifting noises.
*Low transmission fluid level: Insufficient lubrication can cause excessive wear and noise.
* Solenoid faults: Solenoids can wear out or fail, making gear shifting difficult or noisy.
*TCM problems: The TCM may not process data correctly or send incorrect signals, resulting in noisy shifting.
* Worn transmission fluid: Old or contaminated fluid can affect smooth shifting and create noise.
Recommendations:
If you hear noise when shifting gears in your automatic transmission, it is recommended that you have the problem diagnosed and repaired by a qualified mechanic. Failure to make timely repairs can result in further damage and costly repairs.