* Channel-lock pliers (or slip-joint pliers): These are useful for gripping and turning hose clamps. The clamps are usually worm-gear type.
* Flat-head screwdriver: Might be needed to help loosen stubborn clamps if the pliers alone aren't sufficient.
* Rags or shop towels: To soak up spilled coolant. Coolant is corrosive, so protection is important.
* Container to catch coolant: A pan or bucket to collect the coolant that will drain from the hoses.
* Gloves: To protect your hands from coolant.
* Optional: Hose clamp pliers: These make removing and installing hose clamps much easier than using channel-locks or screwdrivers. They're a worthwhile investment if you do a lot of automotive work.
The hoses themselves are typically just push-fit onto the connectors, or have simple clamps. The difficulty will depend on the condition of the hoses and clamps – older, brittle hoses or rusty clamps will be tougher to deal with. If they're very stuck, penetrating oil applied a few hours beforehand can help.
Remember to always consult a repair manual specific to your 2003 Suburban 1500 for precise locations and procedures. Pictures can also be very helpful.
