'17 LS struggling on mountain roads

[GranPrix]

 

[GranPrix]

So it turns out the pressure for the 5.3 should be between 55-62 in park but when I’m driving it’ll sometimes drop all the way down to the 30s

 

[Doubeleive]

So it turns out the pressure for the 5.3 should be between 55-62 in park but when I’m driving it’ll sometimes drop all the way down to the 30s

Too low I think 42 is minimum