I did a 1" sensor lift + ahc fluid flush a few months ago and it's been fine. I just added a front Dissent bumper + winch and now my ahc doesn't always register in "H" on the display when going to high mode.
My plan now is to do front spacers and replace the globes (current original globes with 110k). For the rear should I just do spacers or swap out the rear DS spring with a rear PS spring or both? @AnyMal any thoughts on this since you might be the only who has done this spring swap? Or would it be better to just get the Terrain Tamer rear springs.
My current extra weight mods are: Dissent front bumper, Superwinch SX12SR, Slee step sliders, Sherpa roof rack, and Reef drawers loaded with tools and recovery gear. Planning on getting a rear bumper, fridge and a 100ah lifepo4 battery in the rear next year.
Hey sorry ive been on vacation and kind of lazily catching up.
Ideally you should upgrade the springs instead of any preload bushings in the rear.
The base ahc configuration plus a balanced rear spring can already carry a fairly high load and with the upgrade you will be restoring some height as well instead of reducing compression. Not that anyone has truly calculated any of the modded spring rates, or even have a proper measure of all the options.
Depending on how many people you are also carrying it wouldn't hurt to upgrade beyond the LX spec springs in either case to de-load AHC and restore maximum dynamic damping capability. Where that ends up is a balance between your laden/unladen load management, comfort and any height adjustment you will be making later on. Since you have done the lift AND you are loading up i recommend it 100%.
As far as H not locking in, In order to get your ECU to properly register all height modes you will need to dig a bit into the sensors and do your best to match them by hand via techstream readouts. Definitetly do the front spacers ( like i will soon as my warranty is up) and If i were in there already, i would take out the sensors and see if they are reading within range. A large Left/Right discrepancy will cause gremlins in all modes just like you are witnessing.
The system does not want to add pressure to an already laden shock if there is any indication to the ECU that the load or "height" is off camber given a zero g sensor reading. IE if on flat ground and one wheel is lower than the other due to compression, it will spare that shock from over-pressurizing to lift.
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@TeCKis300 for his handy spring rate research but to make the best choice we need to confirm the oem rears and i highly suspect some trial and error and test driving on your end will be needed to get it exactly how you like. If you do do rears, at 110k, get a matching new set for both.
