yeah, whoever had this yukon before I did absolutely dogged it, but luckily its still in pretty decent shape, other than some worn drivetrain parts. I have replaced/fixed about 80% of everything that was wrong, and i'm down to little things like this that I need to fix. If the IFS doesnt have C-clips, then why would my axle shaft be sliding out of my front differential? when I replaced my CV axles I noticed the problem.. I could slide the axle shaft right out as if it weren't connected, or broken. Any tips/Ideas? my mechanic told me it was a broken c-clip.. Also, I will probably replace the actuator switch and see if that might fix my problem first. "fingers crossed"