Thanks for the tip. The old one was frozen. Popped the new one in and when put in 4 low, pumped all the way up, however upon return to auto 4wd it seemed to dump it back out now for both fronts. Might need to fiddle with it a little. Does the computer need to run some sort of calibration metric when a new sensor is installed? Also, left rear is still low compared to right rear. Does this have a sensor as well or is it just the fronts.
Yeah it may be time for a calibration if you think the fronts are too low as the lowering to trim height in 4wd or 2wd is normal as is raising in 4L is normal. Here is some more info-
4x4 off-road mode is engaged when the vehicle 4x4 system operates in 4x4 low mode at a speed of less than 30 km/h (19 mph), and is defined as 25 mm (0.98 in) above trim height.
Height sensor:
The system uses 3 height sensors — LF, RF and rear.
Height sensor output voltage is between 0.5 and 4.5 volts.
The LF and RF have opposite electrical polarities.
Height sensor voltage output decreases (goes from high to low) as the suspension system raises.
The suspension ride height changes when:
the ignition key is in the RUN position, the doors and liftgate are closed and the vehicle is shifted to DRIVE or REVERSE, ride height changes from kneel to trim.
the ignition key is in the OFF position, the doors and liftgate are CLOSED, ride height changes from kneel to trim.
the 4x4 system mode is switched to 4x4 low, the ride height changes to off-road