wheel torque GMC SIERRA CLASSIC 2007 User Guide

{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 specication. See
Capacities and Specifications on page 609
for wheel nut torque specication.
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 specication. See
Capacities and Specifications on page 609for
the wheel nut torque specication.12. Tighten the 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 either the center cap, or
bolt-on hub cap, depending on what your vehicle
is equipped with. For center caps, 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. For bolt-on
hub caps, align the plastic nut caps with the wheel
nuts and then tighten by hand. Then use the
wheel wrench to tighten.
579

ApplicationCapacities
English Metric
Transfer Case Fluid 2.0 qt 1.9 L
Wheel Nut Torque 140 ft lb
190Y
After rell, the level must be rechecked. Add enough engine coolant so that the uid is within the proper operating
range.
Engine Specications
Engine VIN Code Transmission Spark Plug Gap
VORTEC™ 4.3L V6 XAutomatic
Manual0.060 inches (1.52 mm)
VORTEC™ 4.8L V8 VAutomatic
Manual0.040 inches (1.01 mm)
VORTEC™ 5.3L V8 Flex Fuel Z Automatic 0.040 inches (1.01 mm)
VORTEC™ 5.3L V8 T Automatic 0.040 inches (1.01 mm)
VORTEC™ 5.3L V8 B Automatic 0.040 inches (1.01 mm)
VORTEC™ 6.0L V8 UAutomatic
Manual0.040 inches (1.01 mm)
VORTEC™ 6.0L V8 NAutomatic
Manual0.040 inches (1.01 mm)
VORTEC™ 8.1L V8 GAutomatic
Manual0.060 inches (1.52 mm)
611

(k)Inspect system. Check all fuel and vapor lines
and hoses for proper hook-up, routing, and
condition. Check that the purge valve, if the vehicle
has one, works properly.
(m)Change automatic transmission uid and
external transmission lter if the vehicle is mainly
driven under one or more of these conditions:
In heavy city traffic where the outside
temperature regularly reaches 90°F (32°C) or
higher.
In hilly or mountainous terrain.
When doing frequent trailer towing.
Uses such as found in taxi, police, or delivery
service.
(n)Vehicles with diesel engine or with GVWR
above 10,000 lbs (4 536 kg) only: Inspect shields
for damage or looseness. Adjust or replace as
required. This is a Noise Emission Control Service.
Applicable to vehicles sold in the United States
and recommended for vehicles sold in Canada.
(p)If you drive regularly under dusty conditions,
inspect the lter or change indicator (if equipped)
at each engine oil change.(q)Visually inspect belt for fraying, excessive
cracks, or obvious damage. Replace belt if
necessary.
Owner Checks and Services
These owner checks and services should be
performed at the intervals specied to help
ensure the safety, dependability, and emission
control performance of your vehicle. Your
GM Goodwrench
®dealer can assist you with
these checks and services.
Be sure any necessary repairs are completed at
once. Whenever any uids or lubricants are added
to your vehicle, make sure they are the proper
ones, as shown inRecommended Fluids and
Lubricants on page 629.
At the First 100, 1,000 and 6,000
Miles (160, 1 600 and 10 000 km)
Check dual wheel nut torque. For proper torque,
seeCapacities and Specications on page 609.
625