09/10/2026
2019 Equinox came in after being at a couple other shops with no fix.
The customer installed a kill switch so that he could turn the car off, the car wouldn’t register that it was in Park so it wouldn’t let him turn the car off. It had no communication with TCM
We immediately sold a little time to remove the kill switch and reprogram the EBCM ( it was offline, and not programmed to the vehicle )
That fixed the no com with TCM.
Then we dug a little deeper into the other fault codes we found & the DC Converter Module had burnt internally.
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