I've been scanning and tuning my vehicle for 2 hours a day for a month.
More often than I want I glance over at the scanner at a red light and notice things have stopped working.
First it was all transmission related: speedometer, PRNDL status, vss(stuck at a random mph), trans current gear, trans temp, etc.
In the mean time the speedometer reads, it shifts, it says it's in 2nd but it's not, the tcc locks and it's not programmed to lock in 2nd.
Now other channels have started to freeze, the o2 sensors freeze.
This doesn't matter if I start first time, start the engine first, start the scanner first.
I can disconnect, close the scanner, restart everything and it all works.
Any idea whats going on?