VY Ute Rear Brakes

[itol]

Gidday, I have a 2004 vy s ute - my first holden and I'm lovin it! One question inboard of the right rear wheel is a length of spring steel hooked up to what appears to be a brake cylinder. The spring is able to be hooked on or off - pretty average description but does anyone know what this is/does?

[taztassio]

it doesnt have auto ride height levelling?

[itol]

Not that I know off, and it is in the brake line circuit, possible a brake bias for when a load is on?

[Mr_Calais]

yeah you said it your self its the brake bias for when you have a load in back. Not sure how much it changes it but thats wat its for.

[itol]

Sweet thanks for that.