I bought my '01 Sonoma SLE in 2019 with no functioning four wheel drive. Had to replace the TCCM. Easy fix but now it is acting up again. 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.
