2002 Chevy Astro van front end makes grinding noise

What's your question? It could be a bad belt, A/C compressor, water pump, main bearing, connecting rod, lifter, just about anything. Needs to be looked at by a mechanic.

Transfer Case ?

Sounds like your rear end may be going out, check your diff.

It could be either a loose backing plate from the brakes or possible a shock tower broken

run your hand across the tire tread itself and check to see if the tread is feathered or cupped. this will cause road noise. Also could be a wheel bearing worn.

Could be low on oil, trans doesnt have fluid, wheel bearings are gone, or could be something stuck under the vehicle and either the tires or the drive axle is rubbing against it.

Assuming...you get the noise with the vehicle moving; try loading up one side at a time by doing lane changes when you hear the grind. If the noise increases & then decreases as you go from side to side then you probably have a bad wheel bearing. Also, You could just have a pebble caught between the backing plate & rotor! (they have a tendency to fall out quickly)

Watch out! You might have a loose wheel! Check those wheel nuts. If not, a loose brake caliper, or last if not least, a bad wheel bearing. Don't drive it until you find out what the heck is wrong! Could be dangerous.

Try jacking your vehicle up and turning the tires. listen for any odd noise like a grinding sound, wheels hubs have been known to make a grinding noise when they go bad.

The problem is a 1/8 diameter hose that runs from the front of the engine over the top and connects at the rear of engine on the drivers side. It is a vacuum hose #GM15967970 It cost about $6.22 at your GM dealer. Hope this helps Bill. My E-Mail is [email protected]