I bought my '01 LT in 2019 with no functioning four wheel drive. Had to replace the TCCM. Easy fix but now it is acting up. I just pulled the fuses and reset it but now I'm wondering if I need to start looking for a replacement again. Has anyone here ever repaired their own TCCM that failed? I swear I saw a post somewhere that described replacing a diode that goes bad but I can't find the info now.

 

Did you replace the TCCM with a used or new unit? I was fortunate and was able to replace mine with a new one and haven't had any issues since at least 2010.

 

I got a used one since I'm not a fan of aftermarket if I don't have to. I could not get a new OEM TCCM. Trying to stay original, this is why I would like to fix my old TCCM if I can.

 

If you find instructions on how to repair them or identify where the failures are in these, be sure to post it. I'm sure others would find that information super useful.

 

x2. Yep, I would be very interested!

 

Will do!