Hello All - As the title states, I've noticed that when I leave the sitting for 3 or more days, it seems to lower itself to access height. Can't really tell if it's even lower than that. When I start the truck, it raises normally with no warnings. When I drive it daily, there is no overnight dropping.

Is this normal - Or should I be looking for a leak?

If I need to look for a leak? Where's the most common place to look.

Thanks...

 

soapy water in a spray bottle - spray all suspect areas, will see bubbles getting bigger.

 

The suspension module wakes up every so often and checks the vehicle height sensors. If one corner is dropping, it will lower the other corners to keep it level. So to find out where the leak is, next time you leave it for an extended period of time, disconnect the battery. That way the suspension module cannot intervene. If just one corner drops down, that airbag or the line going to it is leaking. If both wheels on the same axle drops down, the block for that axle may be leaking.

Once you know the general area, you can use the soapy water to pinpoint.

If it wont' drop down, you may have a level sensor flaking out, fooling the suspension module into thinking its dropping down.