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TCCM (also known as the TCSCM) is the Transfer Case Control Module (Transfer Case Shift Control Module), two names the same part.

It is a small control module that is located on the end of the passenger side of the I/P, just under the end cover. Easy to replace, easy to reprogram after replacing. It is used to control the transfer case and the rear locker, if so equipped.

You can still drive the vehicle, but you cannot lock the transfer case; you will still have the unlocked 40F/60R 4x4 system. You just cannot lock it into HI/LO or Lock the rear axle if you have a rear locker.

The STAB SYS/TRACTION FAIL SERVICE will still broadcast across your DIC, unless you press the reset button which turn it off. However, the traction control idiot light will still be on.

Does not affect anything other than the ability for the traction control and stability control to operate, and the little 4x4 indicator lights will be off. I will be driving mine until the new part comes in for replacement.

I did some checking, and the reason the dealer programmed the module was there was an issue that a re-program could fix. But it had to have certain codes (B0790, B2725, C0359). If it had other codes, the dealer is to troubleshoot the codes to narrow it down to either the TCCM or the encoder module (motor) on the transfer case.

(A TCM is a transmission or transaxle control module and it is what controls a transaxle or transmission (depending on what unit is used). Some cars have a TCM and an ECM (engine control module), some like the H3 has a powertrain control module that contains the circuitry for both the ECM and the TCM.)