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Potential Tuner
4L60E TCC lockup issue
Hello Guys, I'm having an issue where the TCC will either stop locking, or never lock. Verified in the scanner that its not receiving the apply signal. I can pull over, cycle power and it will operate normally again. Its a 58X 5.3 motor, 4L60 without ISS run by a E38 ECM with T42 TCM in a 86 C10. Any ideas on what I've missed? I know its not ideal to have an non ISS trans controlled by a T42, but I was able to make it work, and hope its not causing my issue.