Duramax LBZ/LMM/LML A40 and A50 TCM Tuning

Duramax LBZ/LMM/LML A40 and A50 TCM Tuning

  • $219.00
    Unit price per 


Send us a stock read of your 6 speed Allison A40 or A50 TCM and we will adjust the transmission as required, firmer shifts, all around better driveability and adjust shift points as required.

When ordering, add tire size and or gear ratio to the notes if not stock