Electrical · important priority
TCM Replacement (Transmission Control Module) Cost & Pricing
Replace the TCM — the computer that controls automatic transmission shift logic, torque converter lockup, and shift timing. A failed TCM causes erratic shifting, no shifting, limp mode (stuck in 2nd or 3rd gear), or incorrect gear ratio fault codes.
Typical TCM Replacement (Transmission Control Module) cost
$580–$1,580, with an average estimate of $880 before vehicle-specific adjustments.
What to expect
Difficulty: moderate. Typical labor time: 1–3 hours.
Mechanic's tip
On many modern vehicles, the TCM is integrated into the ECM (one combined unit) — confirm whether your vehicle has a separate module before proceeding. A new TCM must be programmed to the vehicle and transmission and usually requires dealer-level equipment. Before condemning the TCM, have transmission solenoids, fluid condition, and wiring harness connectors thoroughly checked — these are far more common failure points.