GMC 1995 Suburban Owner's Manual page 327

Air Conditioning
Every now and then have your dealership check your air conditioning
system to be sure it has not lost any cooling ability. I f 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).
Fluid Leak Check
After the vehicle has been parked for a while, inspect the surface under the
vehicle for water, oil, fuel or other fluids. Water dripping from the air
conditioning system after it has been used is normal. If you notice fuel leaks
or fumes, the causes should be found and corrected at once.
Lock Cylinders
To be sure your locks operate properly, they must be lubricated. Your
vehicle's maintenance schedule will tell you how often to lubricate them.
See "Recommended Fluids and Lubricants" i n the Index for the proper
lubricant to use.
You should not use penetrating oils because they could wash out the factory
installed lubricant and cause the lock to bind. De-icers which contain
alcohol could also wash away the lubricant, so be sure to lubricate the lock
after using a de-icer of this type.
Battery
Every new GM vehicle has a Delco Freedom@ battery. You never have to
add water to one of these. When it's time for a new battery, we recommend
a Delco Freedom@ battery. Get one that has the replacement number shown
on the original battery's label.
Vehicle Storage
If you're not going to drive your vehicle for 25 days or more, take off the
black, negative
(-)
cable from the battery. This will help keep your battery
from running down.
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