I would have to say they are full of shi*! I am not 100% sure, but the
actuator IS water/oil tight! As is
the diff with the exception of the vent on the drivers side of the pumpkin. A
big plastic cover plugs a big
hole that has a semi-small hose running up to keep rain and most shallow water
I could possibly get corrected on this, so don't go off half-cocked.
| My 98 Silverado Z71 has just had its 4th 4WD actuator replaced with only 60K
| miles. In Jan 04 at 56K miles, I was told it had water in it & the front
| differential. I thought they were BSing me so I left pissed. Since they
| guaranteed both parts & labor for 12 mo/12K mi, they told me the actuator
| sits on top of the diff (not very high), isn't watertight, & delivers water
| into the front diff. They told me the sames true with all 4x4s except the
| Hummer. Can this be true? I guess my next 4x4 will be ordered with the
| manual floor shift to switch from 2 to 4WD.