Page 403 of 492
8. Install the spare tire.
{CAUTION:
Never use oil or grease on studs or nuts.
If you do, the nuts might come loose.
Your wheel could fall off, causing a
serious accident.
9. Put the wheel nuts
back on with the
rounded end of the
nuts toward the
wheel. Tighten each
wheel nut by
hand. Then use the
wheel wrench to
tighten the nuts until
the wheel is held
against the hub.
Front Position
403
Page 404 of 492
10. Turn the wheel wrench counterclockwise to
lower the vehicle. Lower the jack completely.
{CAUTION:
Incorrect wheel nuts or improperly
tightened wheel nuts can cause the wheel
to come loose and even come off. This
could lead to an accident. Be sure to use
the correct wheel nuts. If you have to
replace them, be sure to get new GM
original equipment wheel nuts. Stop
somewhere as soon as you can and have
the nuts tightened with a torque wrench to
the proper torque speci cation. See
Capacities and Specifications on page 430
for wheel nut torque speci cation.
Rear Position
404
Page 405 of 492
Notice:Improperly tightened wheel nuts can
lead to brake pulsation and rotor damage.
To avoid expensive brake repairs, evenly
tighten the wheel nuts in the proper sequence
and to the proper torque speci cation. See
Capacities and Specifications on page 430for
the wheel nut torque speci cation.
11. Tighten the wheel
nuts rmly in a
crisscross sequence
as shown by
turning the wheel
wrench clockwise.When you reinstall the regular wheel and tire, you
must also reinstall the center cap. Place the
cap on the wheel and tap it into place until it seats
ush with the wheel. The cap only goes on one
way. Be sure to line up the tab on the center cap
with the indentation on the wheel.
405
Page 406 of 492

Secondary Latch System
Your vehicle has an underbody-mounted tire hoist
assembly that has a secondary latch system. It
is 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. SeeStoring a Flat or
Spare Tire and Tools on page 410.
{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 next.To release the spare tire from the secondary latch,
do the following:
1. Check under the
vehicle to see if the
cable end tting
is visible.
2. If the cable end tting 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 wheel wrench
counterclockwise three or four turns.
406
Page 407 of 492
4. Repeat this procedure at least two times. If
the spare tire lowers to the ground, continue
with Step 5 underRemoving the Spare
Tire and Tools on page 395.
5. Turn the wrench counterclockwise until
approximately 6 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 (A)
on the wheel
blocks (B),
separating them so
that the jack is
balanced securely.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 wheel.
9. Turn the wheel wrench clockwise to raise the
jack until it lifts the tire.
10. Continue raising the jack until the tire stops
moving upward and is held rmly in place,
the secondary latch has released, and the tire
is balancing on the jack.
407
Page 408 of 492
11. Remove the jack handle and insert the hoist
end of the extension through the hole in the
rear bumper.
Turn the wheel wrench counterclockwise one
turn or until the wheel retainer assembly is
disengaged.12. Reinsert the jack handle into the jack.
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 under spare.
408
Page 409 of 492