Possible causes and solutions to the problem when the automatic transmission pulls gears when shifting:
1. Transmission fluid level is low: Check ATF level and add if necessary. Low fluid levels can cause clutch slipping and difficult gear shifting.
2. Contaminated transmission fluid: Replace ATF fluid and filter. Contaminated fluid may contain particles that prevent valves and clutches from working properly.
3. Faulty Solenoids: The solenoids control the flow of ATF through the transmission. Faulty solenoids can cause gears to shift incorrectly or drag.
4. Worn Friction Discs: The friction discs in clutches wear out over time, leading to slipping and difficult gear shifting. Replace worn discs.
5. Faulty torque converter: The torque converter transfers power from the engine to the transmission. A faulty torque converter can cause slipping or delayed shifting.
6. Faulty Transmission Control Module (TCM): The TCM controls the operation of the transmission. A faulty TCM may send incorrect signals, causing difficult shifting.
7. Worn Gears: Gears can wear out over time, resulting in noise and difficult gear shifting. Replace worn gears.
8. Faulty Wiring Harnesses: Faulty wiring harnesses can transmit incorrect signals between transmission components. Replace faulty wiring harnesses.
Recommendations:
*Consult a qualified mechanic for automatic transmission diagnosis and repair.
*Change ATF fluid and filter regularly.
* Do not carry excessively heavy loads or tow trailers that exceed the permitted weight.
*If the problem persists, the transmission may require major repairs or replacement.