I just recently bought a 06 chevy suburban and it didn't have a spare tire on the winch because someone cut it. The jack and tool used to lower the winch is not present also. I just bought a new tire winch which I'm going to install I just need to know where to purchase the tool used to lower winch? I need help to determine whether the shaft to the key hole also needs to be replaced because it is not connected to the existing tire winch.

The one marked “tire winch”

under the rear seat should be a tool kit with the handle for the jack pull these out and goto the back of the truck ... over the licence plate but under the tail gate is i hole ... use a flash light to look in the hole ... match the rod that is in the kit to hook up to the lower winch for the tire and lower the tire down

You didn't mention YEAR or MODEL, but if it is like most Lexus vehicles, the spare tire winch has a square "nipple" on the end of it, not a "slot". You slide the jacking extension square-end first into the tube and onto the nipple. (This usually requires connecting two or more jacking extension pieces together) You then use the lug wrench (which has a square hole in it) to turn the jacking extension to lower the tire.

There is a compartment inside the rear hatch (sometimes on the driver's side and sometimes on the Passenger side) that you can open and your tire changing equipment and instructions will be in there. (unless someone removed it) The jack handle must be used to "crank" the winch to let down the cable that holds the spare tire in place.

Hello! Here is procedure to remove spare tire...Guru...saailer

1. Park on a level surface and put on the emergency brake. If the car is near the side of a road, switch on the hazard lights.
   
2. Locate the tire repair kit. It consists of a jack, a jack rod and a wheel nut wrench. In the regular cab, pull the entire seat bench forward. The tools are located behind the drivers seat. The King cab model has a tool case located directly behind the driver's seat. The Crew cab stows the tools behind the back bench. Pull the bench forward and remove the tools.
   
3. Insert the square end of the jack rod into the square hole in the nut wrench. This gives the jack rod a handle.
   
4. Find an oval shaped hole in the back of the truck under the middle of the tailgate. Look through the hole and find the winch for the spare tire. It is a circle with two notches.
   
5. Insert the T-shaped end of the jack rod into the hole. Slip the T-shape into the double notched circle of the winch.
   
6. Turn the jack rod counterclockwise to lower the spare tire to the ground.
   
7. When the tire is completely lowered to the ground, remove the center retainer chain and pull the tire out from under the truck.
   
8. Wind the jack rod clockwise to completely retract the retainer chain
   

I’m happy to help further over the phone at https://www.6ya.com/expert/david_6df67de3b14de867

Typically all Suburban spare tires are mounted on an under-car carrier. This carrier is usually accessed through a covered key way at the rear bumper near the license plate step. The jack that comes with the Suburban also has a crank rod that is used to raise and lower the jack. The other end of the rod is designed to access the key way to crank the spare tire lift up or down. Cranking the lift in a counterclockwise rotation will lower the spare tire.

I hope this helps:)

It is a crank and it is the same tool used to raise and lower your jack,it might be were your jack is stored.

From the owner's manual for that model, see link below also, page 299 of the PDF has a nice picture.

Spare Tire Removal
Fit the jack handle extension over the drive nut. Use the
Lug Wrench to rotate the nut counter clockwise until the
spare is on the ground with enough slack in the cable to
allow to pull the tire out from under the vehicle.
CAUTION!
The winch mechanism is designed for use with the
jack extension tube only. Use of an air wrench or
other power tools is not recommended and can
damage the winch.
When the spare is clear, tilt the retainer at the end of the
cable and pull it through the center of the wheel.

http://www.jeep.com/en/owners/manuals/index.html?year=2006&nameplate=Grand%20Cherokee

Sugerinimo's idea is good but I good not get it too work.. Well, this can be easier or a bit harder. Mine was harder. You are stuck on the secondary tire lock. There is a process in your manual that involves lowering the tire as far as it goes with the secondary lock, then placing your tire jack under the center of the tire holder and jack it back up until its tight to the frame - this should release the secondary lock. In my case this did not work. Plan B, is grab a 15 mm socket, small extension and ratchet. Lower the tire as far as it goes. Locate the 15mm bolt that attaches the tire hanger to the frame, undo the bolt, the hanger is then swinging from the back, lift up the tire and bracket and it will fall off. be careful the tire is heavy.
Next on the top of the tire you will see a rubber cover the secondary lock slides into. Pull down the boot. You will see two holes along the bottom on the opposite side to the crank. Turn the bottom part of the lock. If you look in the holes you can see where the catch is. Take a slot screw driver and hammer, line up the catch and tap it back in.
The secondary lock is now free.
Remember when reinstalling the bolt on the frame to use some locktite.