GMC 1994 Yukon Owner's Manual page 293

Wheel Nut Torque
For vehicles with dual wheels, when the vehicle, wheel or fasteners are new,
have the torque set at the first 100, 1,000 and 6,000 miles (160, 1600 and
9600 km). Use the torque specified in the appropriate Specification Chart
later in this section.
Single Belt Accessory Drive
If your new vehicle uses a serpentine belt, it is lighter, and more durable
than systems with several belts.
The belt runs over or around the pulleys on the engine. A tensioner may be
used to keep the belt tight at all times. The tensioner also makes replacing
the belt easier if you need to replace the belt, be sure to get the correct
replacement belt. Your dealership or parts supplier can help
you with this.
The Accessory Drive Belt Routing label on your vehicle will show you how
to route the belt your vehicle uses.
Windshield Wiper Blade Inserts
To replace your
windshield wiper
blade inserts, lift the
wiper arm and rotate
the blade until it is
facing away from the
windshield.
Unlatch the end of the insert from the holding clips. Remove the insert and
slide a new one in place. Make sure the blade is secured in the clips.
Air Conditioning
Every now and then have your dealership check your air conditioning
system to be sure it has not lost any cooling ability. If you think the system
is not working properly, have your dealership check it out as soon as
possible.
The air conditioning will not work when the temperature is below 40°F
(4°C).
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