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Message: <blockquote data-quote="spack" data-source="post: 1999439" data-attributes="member: 69868">This is not an auto stop.  However, it does show that parking the phasers happens during normal operation and when an engine stop might be anticipated.  Sorry for the sloppy annotation.  At time 933.33, I let off the throttle. (3rd trace from bottom).At time 958.66, the truck rolls to a stop and the engine RPM drops to a little over 500 RPM (bottom trace)At that same time, the ECU parks the phasers.  You can see the 2nd and 5th traces are the exhaust and intake, bank 1, PWM percents, and they are forced to 0 percent in both cases.  This is full pressure on the homing direction of the phasers and minimum pressure on the lock pin float pressure.  It's a guaranteed lock.  The logic behind this is anybody's guess.  It could be as I said, anticipating an engine stop.  ??  Don't know.  The capture here is a gen2 (2018) with 21b10 update applied.</blockquote>