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5-16
Your vehicle may be
equipped with one of
the two caps shown.
1. Park the vehicle on a level surface. You can remove
the coolant surge tank pressure cap when the cooling
system, including the coolant surge tank pressure cap
and upper radiator hose, is no longer hot. Turn the
pressure cap slowly counterclockwise (left) about
one full turn. If you hear a hiss, wait for that to stop.
A hiss means there is still some pressure left.
2. Then keep turning the pressure cap slowly, and
remove it.
3. Then fill the coolant surge tank with the proper
mixture, to the FILL COLD mark.
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5-21
Suburban/Yukon XL Models
A. Bottle Jack
B. Wheel Blocks
C. Wing Nut
D. Mounting Bracket
E. Removable TrayF. Retaining Hook
G. Retaining Bracket
and Wing Nut
H. Tool Kit with Jack
Tools and GlovesThe equipment you'll need is under the storage tray in
the left trim panel for Suburban/Yukon XL models.
For Tahoe/Yukon models, the equipment is located
under the rear seat behind the driver's seat and behind
the left trim panel in the rear of the vehicle. Skip the
first step and follow the last three.
1. Remove the tray to access the tools.
2. There is a wing nut used to retain the tool kit.
To remove it, turn the wing nut counterclockwise.
3. To release the bottle jack from its holder, turn the
knob on the bottle jack counterclockwise to lower
the jack head.
4. The wheel blocks and the wheel block
retainer can be removed by turning the
wing nut counterclockwise.
You'll use the jack handle extensions and the wheel
wrench to remove the underbody
-mounted spare tire.
Page 306 of 443

5-23
Follow these instructions to lower the spare tire:
1. If the vehicle is equipped with a hoist lock, open the
spare tire lock cover on the bumper and use the
ignition key to remove the lock.
2. Assemble the wheel wrench and the two jack handle
extensions as shown. Insert the hoist end (open end)
of the extension through the hole in the rear bumper.
Be sure the hoist end of the extension connects into
the hoist shaft (the ribbed square end of the
extension is used to lower the spare tire).
3. Turn the wheel wrench counterclockwise to lower
the spare tire to the ground. Continue to turn the
wheel wrench until the spare tire can be pulled out
from under the vehicle. The wheel wrench has a
hook that allows you to pull the hoist cable towards
you, to assist in reaching the spare tire.
4. When the tire has been lowered, tilt the retainer at
the end of the cable so it can be pulled up through
the wheel opening.
5. Put the spare tire near the flat tire.
The tools you'll be using include the bottle jack (A), the
wheel blocks (B), the jack handle (C), the jack handle
extensions (D), and the wheel wrench (E).
If the flat tire is on the rear of the vehicle, you'll need to
use both jack handle extensions.
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5-24
Attach the wheel wrench to the jack handle extensions
(as needed). Attach the jack handle to the jack.Turn the wheel wrench clockwise to raise the jack lift
head to the lifting point.
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5-25
If your vehicle has wheel
nut caps, loosen them by
turning the wheel wrench
counterclockwise. If you
have a center cap with
wheel nut caps, the wheel
nut caps are designed to
remain with the center cap.
Remove the center cap.
If the wheel has a smooth center piece, place the chisel
end of the wheel wrench in the slot on the wheel and
gently pry out.Removing the Flat Tire and Installing the
Spare Tire
1. Use the wheel wrench
to loosen all the
wheel nuts. Turn the
wheel wrench
counterclockwise to
loosen the wheel nuts.
Don't remove the wheel
nuts yet.
Page 310 of 443
5-27
Front Position
Rear Position
1500 SeriesRear Position
2500 Series
3. Make sure the jack head is positioned so that the rear
axle is resting securely between the grooves that are
on the jack head. Turn the wheel wrench clockwise
to raise the vehicle. Raise the vehicle far enough off
the ground so there is enough room for the spare tire
to fit back underneath the rear of the vehicle.
Page 313 of 443
5-30
Rear Position
1500 SeriesRear Position
2500 Series
7. Turn the wheel wrench counterclockwise to lower
the vehicle. Lower the jack completely.
8. Tighten the nuts firmly in a crisscross sequence as
shown by turning the wheel wrench clockwise.
Page 316 of 443
5-33
A. Hoist Assembly
B. Wheel Wrench
C. Jack
Handle Extensions
D. Hoist ShaftE. Valve Stem,
Pointed Up
F. Flat or Spare Tire
G. Tire Retainer
H. Hoist CableTo store the tools, follow these procedures:
For Tahoe/Yukon models do the following:
1. Put the tool kit, with the jack tools and gloves,
in the tool bag and place in the retaining clip
under the driver's side second seat.
2. Tighten down with the wing nut.
3. Then, assemble wheel chocks and bottle jack
together with the wing nut and retaining hook.
4. Position behind the jack storage cover in the left
rear side panel just below the speaker and tighten,
adjusting clockwise until the jack is secured tight
in the mounting bracket. Be sure to position the
holes in the base of the jack onto the pin in the
mounting bracket.