As far as the oil pressure dropping low and throwing the tranny into limp mode---highly doubtful.
Even if it did, as long as the engine was turning you'd be damaging the engine internals and something would eventually give.

Limp mode can be triggered by the tranny self diagnosing -- as it has in your case -- but your P0757 requires a very specific shift sequence to occur repeatedly in order to set this code.

When a very specific problem is determined via self diagnosis by the TCM, it will set a very specific code.

Limp mode is a term that people use to cover 2000 possible different issues that make the tranny or engine go into failsafe mode
Each type of failure that occurs results in DIFFERENT actions taken by TCM, BCM, or PCM.
So although the performance is reduced, the exact nature of the problem dictates what the vehicle does to protect itself from further damage

 

i am going to change and test the oil switch tom. anyways, i just want to know if the tranny gets info from the pcm from that switch is all...

 

I think that transmission will run down the road in high gear and not care if the engine runs out of oil.

 

lol, these electronic trannys can be very finicky, i believe the engineers are not even sure what all they will do in certain cases.... that one link wasn't posted until 2016 so... im just trying to learn as much as i can as with anything im doing... some e trannys wont even let the car start if the oil pressure gets low... my bro-in laws tranny would go into limp mode after disconnecting stereo, some are connected to cruise control, very strange these are... im going to get me a 57 chevy with a straight 350, very few wires .... YEA... A 57 Chevy cherried out, my dream car

 

In theory it is possible

On a 2005 Vue -- in 2005 -- on a Vue ---

I highly doubt there is any info about engine oil pressure sent to the tranny; it should be going off its own fluid pressure among other things to know when to shift.

There are too many situations that could result in changes in oil pressure to determine what the tranny should be doing, especially when so much other definitive info like engine rpm, vehicle speed, MAP/MAF info, input shaft speed, and the slope of those values.

 

that's what im trying to find out derf... if the pcm/tcm gets any info from the oil switch that would effect that particular tranny... searching searching

also wondering if a faulty pcm/tcm could be the culperate... they are on same computer on this model...

 

also something very weird.... when u start the suv, i hear a bump bump bump sound.... sounds like its coming from rear somewhere then it stops... only 3 times... never seen this before either but might shed light or ring a bell for someone. when i first heard it i thought it was someone messing with me outside like they was hitting side of car... tap tap tap shut car off, start again... after a few seconds, again, tap tap tap

 

This is out of my Fsm.