8 Reasons For Automatic Transmission Grinding Noise: How To .
WEBSep 3, 2023 · The most common reason a transmission makes a grinding noise when you put it in gear is low transmission fluid or degraded/contaminated transmission fluid. However, there are undoubtedly other mechanical faults that could be causing the grinding sound, such as a wornout shift linkage or a wornout torque converter. 1.