Ok, so my truck kept dieing and not starting. I knew my battery cables needed changing because they were spliced here and there from previous owner. Anyway, I'm not sure what they did but the cables were all thick cables. Makeshift almost. They also we're black. Starter to the positive terminal...

So our 2002 Chevy Trailblazer LT has been a great vehicle since we bought it from a private seller. Several months later we got a check engine light come on and no funny smells , no weird noises and all mechanics work. We plugged a code reader in it said "Fan speed high" About an hour after that...

The gear oil is leaking in the front differential is there anything to do besides replacing?

This is on the driver's side. I replaced my half shaft a while back. I neglected to change the seal. It's leaking oil on my driveway now. I took a video of the oil surrounding the half shaft right where it meets the differential. I'm assuming I should change the inner seal. But it does wiggle...

I'm having some serious vibrations that are noticeable around 85mph. If I put a water bottle in the cup holder you can see the water bouncing. I'm thinking it may be a wheel balance/ alignment issue. Any thoughts?