To lubricate your chassis components, you'll need to:
1. Consult your owner's manual: This will provide a diagram showing the location of grease fittings.
2. Inspect the suspension components: Look for zerk fittings (small, nipple-like fittings) on ball joints, tie rod ends, and other suspension components. These are usually metal and require a grease gun.
3. Use a grease gun: Apply grease to each fitting until new grease is visible coming out of the seal. Don't overfill.
Important Note: Many components on a 2003 Ram 1500 may use sealed bearings that *don't* require greasing. Attempting to force grease into a sealed bearing could cause damage. Only grease fittings that are clearly present should be lubricated. If you are unsure about a particular component, it's best to consult a mechanic.