No crank no start! Help!

Tanka4ever

Original poster
Member
May 30, 2020
18
Pennsylvania
I'm listening to you guys. It does not establish any obd protocols. And it won't read anything, whether the vehicle powers the device, or the Launch. Ground test dark green. Got that. And I'll test 4, 5, and 6. Cover them all. And for power on pin 16 (when I plug in the launch though it does recognize power because it charged the 2% of the battery I lost from days of this). Moose, I have another PCM and BCM with the same gear ratios from another ext TB I'll swap in tomorrow, and report back.
Thanks guys, really. I know this is a mess.
 

Mooseman

Moderator
Dec 4, 2011
25,257
Ottawa, ON
Do not swap the BCM as that does need to be reprogrammed along with VATS and other stuff. The PCM is cake with just the security relearn. Of course that's only IF the BCM is not at fault. Right now, I would suspect the PCM unless you're not getting power or ground to it.
 

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