clock GMC SIERRA DENALI 2004 Owner's Manual

Secondary Latch System
Your vehicle has an underbody mounted tire hoist
assembly equipped with a secondary latch system. It's
designed to stop the spare tire from suddenly falling
off your vehicle. For the secondary latch to work,
the spare must be installed with the valve stem pointing
down. See ªStoring a Flat or Spare Tire, Jack and
Toolsº earlier in this section.
{CAUTION:
Before beginning this procedure read all the
instructions. Failure to read and follow the
instructions could damage the hoist assembly
and you and others could get hurt. Read and
follow the instructions listed below.
To release the spare tire from the secondary latch do
the following:1. Check under the vehicle to see if the cable end is
visible.
2. If the cable is not visible proceed to Step 6.
If it is visible, ®rst try to tighten the cable by turning
the wheel wrench clockwise until you hear two
clicks or feel it skip twice. You cannot overtighten
the cable.
3. Loosen the cable by turning the wrench
counterclockwise three or four turns.
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4. Repeat this procedure at least two times. If the
spare tire lowers to the ground, continue with
Step 5 of ªRemoving the Spare Tire and Toolsº
earlier in this section.
5. Turn the wrench counterclockwise until
approximately six inches (15 cm) of cable is
exposed.
6. Stand the wheel blocks
on their shortest ends,
with the backs
facing each other.7. Place the bottom edge of the jack on the wheel
blocks, separating them so that the jack is
balanced securely.
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8. Attach the jack handle, extension, and wheel
wrench to the jack and place it (with the wheel
blocks) under the vehicle towards the front of the
rear bumper. Position the center lift point of the jack
under the center of the spare tire.
9. Turn the wrench clockwise to raise the jack until it
lifts the end ®tting.
10. Continue raising the jack until the spare tire stops
moving upward and is held ®rmly in place. The
secondary latch has released and the spare tire is
balancing on the jack.11. Lower the jack by turning the wheel wrench
counterclockwise. Keep lowering the jack until the
spare tire slides off the jack or is hanging by
the cable.
{CAUTION:
Someone standing too close during the
procedure could be injured by the jack. If the
spare tire does not slide off the jack
completely, make sure no one is behind you or
on either side of you as you pull the jack out
from the spare.
12. Disconnect the jack handle from the jack and
carefully remove the jack. Use one hand to push
against the spare while ®rmly pulling the jack out
from under the spare tire with the other hand.
If the spare tire is hanging from the cable, insert the
hoist handle, extension and wheel wrench into
the hoist shaft hole in the bumper and turn
the wheel wrench counterclockwise to lower the
spare the rest of the way.
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13. Tilt the retainer at the
end of the cable and
pull it through the
wheel opening. Pull the
tire out from under
the vehicle.
14. If the cable is hanging under the vehicle, turn
the wheel wrench clockwise to raise the cable
back up.
Have the hoist assembly inspected as soon as you can.
You will not be able to store a spare or ¯at tire using
the hoist assembly until it has been replaced.
To continue changing the ¯at tire, see ªRemoving the
Flat Tire and Installing the Spare Tireº earlier in
this section.Spare Tire
Your vehicle, when new, had a fully in¯ated spare tire.
A spare tire may lose air over time, so check its
in¯ation pressure regularly. See
In¯ation - Tire Pressure
on page 5-67andLoading Your Vehicle on page 4-48for information regarding proper tire in¯ation and loading
your vehicle. For instruction on how to remove, install
or store a spare tire, see
Changing a Flat Tire on
page 5-76.
After installing the spare tire on your vehicle, you should
stop as soon as possible and make sure the spare is
correctly in¯ated. Have the damaged or ¯at road
tire repaired or replaced as soon as you can and
installed back onto your vehicle. This way, a spare tire
will be available in case you need it again.
Your vehicle may have a different size spare tire than
the road tires, those originally installed on your vehicle.
This spare tire was developed for use on your vehicle,
so it is all right to drive on it.
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