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Your GMC Motorhome is equipped with
its own self-contained water system. Refer to
"Water System Schematic.' . " The water tank and
pressure pump is located at the right rear corner
of the Motorhome. The water pump switch is
located near the entrance door.
Water pressure is maintained by a 12-volt
water pump which is designed to automatically
maintain enough pressure to ensure a steady
water flow. A pressure switch is located at the
water pump to maintain line pressure between
20 psi and 30 psi.
Information on how to sanitize, drain, and
maintain your vehicle's water system can be
found in the SERVICE AND MAINTENANCE
section .
IMPORTANT : Do not attempt to increase water
pressure with high pressure air . Be sure the water
pump is turned "OFF" when the water tank is
empty .
FILLING WATER TANK
FILLING FROM A
PRESSURIZED WATER SYSTEM
NOTE: The water tank fill door is equipped with
a lock. The key for this lock (oval head) is the
same as for the entrance door, glove box and
external utilities compartment.
1. Unlock filler door and open.
2. Unthread water fill cap from filler opening .
Location of
Water Pump Switch
LIVING AREA WATER SYSTEM
3 8
3. Insert hose or funnel into filler opening
and fill tank . Capacity of water tank is 40
gallons .
NOTE : When tank is full, water will spill from
the filler opening .
4. Turn on water pump switch. Open bath-
room faucets to clear air from lines if the water
tank has been dry and to let water heater fill .
5. Install filler cap securely after filling tank
to help prevent contamination of water system .
6. Always lock water tank fill door.
EXTERNAL WATER CONNECTION
Connecting to a park or city water supply is
easily accomplished. It is not necessary to drain
the vehicle's water system.
1 . Remove the plastic cap at the hose con-
nection located in the external utilities compart-
ment.
2 . Attach hose and turn ON external water
supply.
3 . When disconnecting hose, be sure to install
plastic cap at hose connection to aid in keeping
dirt out of water lines .
IMPORTANT : To avoid possible damage to ex-
ternal water connection components, from freez-
ing, when not being used-perform the following :
Location for Filling Water Tank
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