Intermittently no communication with the TCM on a 2006 Pontiac G5. Started with the basics, I wanted to load test the powers and grounds to verify circuit integrity.
Turns out I had a bad ground, which you can see when wiggled the voltage drop gets “better” 👌
The pin in the connector also had no terminal tension and pulled out of the connector with ease. New terminal and ground eyelet fixed this issue! Based on the amount of codes and symptoms, this was a very likely cause to begin with. U0101 code was present in each module.
I’m using a DYVOmeter in LOAD mode which actively loads each circuit independently and shows you the voltage available or voltage loss. Check them out on Instagram, thanks for watching!
If you’re interested in a DYVO, use the code KBUELLDIAG to receive $20 off each/any kit 💯
The scan tool I’m using is an Autel 909.