GMC Motorhome 1976 User manual

A Word To The GMC MotorHome Owner .. .
Congratulations on your purchase of a GMC MotorHome.
You have opened the way
to an endless variety of happy
holidays.
This
manual has been prepared to acquaint you witJ,
the operation and maintenance of your MotorHome, and to
provide important safety information. It is supplemented
by convenient folders which provide additional information
on vehicle maintenance, emission control, and warranties.
We urge you
to read these publications carefully andfollow
the recommendations
to help assure the most enjoyable and
troublefree operation of your vehicle.
When
it comes to service, remember that your GMC
MotorHome Dealer knows your vehicle bestand is interesteiJ
in your complete satisfaction. Return to him for service and
any other assistance you may require.
GMC Truck and Coach maintains a number of Zone
Offices throughout the country. Should you have a problem
that cannot
be handled through normal channels, please fol-
low the procedure described under the n Owner Assistance"
section.
Thank you
for choosing a GMC MotorHome. We
extend ourbest wishes
for many years of pleasant traveling.
Cordially,
~f,.~
(/ General Sales Manager
{ _j
-

~ ..
.
i
,.
I
-·
- -~ -
GMC MOTORHOME
OPERATING MANUAL
IMPORTANT
This manual should be considered a permanent
part of the vehicle and must remain with the
vehicle at time of resale.
All information, illustrations and specifications
contained in this manual are based on the latest
product information available at the time of pub-
lication. The right is reserved to make changes at
any time without notice.
For vehicles sold in Canada, substitute the
name General Motors of Canada whenever the
name GMC Truck & Coach Division appears in
this manual.
Service Publications
GMC TRUCK & COACH DIVISION
GENERAL MOTORS CORPORATION
Pontiac, Michigan 48053
X-76218
Part No. 201048 5

TABLE OF CONTENTS
SUBJECT
PAGE NO.
Important Information on
Vehicle Loading . . . . . . . . . . . . . . . . . . . 1
Before
Driving Your MotorHome . . . . . . . . . 3
Driver Checklist . . . . . . . . . . . . . . . . . . 3
Inside Rearview Mirror . . . . . . . . . . . . . 3
Keys........................... 4
Entrance Door . . . . . . . . . . . . . . . . . . . 4
Seats . . . . . . . . . . . . . . . . . . . . . . . . . 5
Lap Belts . . . . . . . . . . . . . . . . . . . . . . . 7
Lap Belt Inspection . . . . . . . . . . . . . . . . 9
Child Restraint . . . . . . . . . . . . . . . . . . . 9
Trailer Hauling . . . . . . . . . . . . . . . . . . . 9
Operation In Foreign Countries . . . . . . . 10
Trip Tips . . . . . . . . . . . . . . . . . . . . . . . 10
Driving Tips . . . . . . . . . . . . . . . . . . . . . 11
Starting and Operating Vehicle . . . . . . . . . . 13
Engine Exhaust Gas Caution . . . . . . . . . 13
Steering Column Controls . . . . . . . . . . . 14
Anti- Theft Ste ering Column Lock . . . 14
Parking . . . . . . . . . . . . . . . . . . . . . . 14
Starting Engine . . . . . . . . . . . . . . . . . 15
Automatic Transmission . . . . . . . . . . 15
Tum Signal and Lane Change Feature 16
Hazard Warning Flasher .......... 16
Hom Control . . . . . . . . . . . . . . . . . . 16
Power Steering . . . . . . . . . . . . . . . . . 16
Tilt Steering Wheel . . . .. . . . . . . . . . . 17
Cruise Control . . . . . . . . . . . . . . . . . . 17
Floor Controls . . . . . . . . . . . . . . . . . . . . 18
Power Brake System . . . . . . . . . . . . . 18
Headlight Dimmer Switch ......... 20
Headlight "Flicker" . . . . . . . . . . . . . . 20
Instrument Panel and Controls . . . . . . . . 21
Speedometer and Odometer . . . . . . . . 21
ii
SUBJECT
PAGE NO.
Fuel Gauge . . . . . . . . . . . . . . . . . . . . 21
Temperature Gauge . . . . . . . . . . . . . 21
Oil Pressure Gauge . . . . . . . . . . . . . . 21
Charging System Warning Light .... 21
Brake System Warning Light. . . . . . . 21
Tell-Tale Warning Light Cluster .... 22
Headlight Switch .. . ..... . ...... 22
Windshield Wiper Lever .......... 23
Windshield Washers ....... .. .... 23
Fuel Selector Switch . . . . . . . . . . . . . 23
Battery Boost Switch ....... .... . 23
Cigar-Cigarette Lighter . . . . . . . . . . . 24
Heating System (Without
Automotive Air Conditioner) . . . . . 24
Automotive Air Conditioner ........ 25
Radios and Tape Deck. . . . . . . . . . . . 26
Mobile Radio Transmitters .. .. .... 27
Electro-Level System ............ 28
Operation of Living Area Facilities . . . . . . . 31
Living Area Facilities Caution . . . . . . . . 31
Living Area Electrical System . . . . . . . . 31
General Information . . . . . . . . . . . . . 31
120 - Volt To 12-Volt Converter
and Battery Charger . . . . . . . . . . . 31
External Power ..... ... ... .... .. 32
Lighting System ................ 33
Monitor Panel . . . . . . . . . . . . . . . . . . 33
Motor Generator . . . . . . . . . . . . . . . . 34
Exterior Receptacle . . . . . . . . . . . . . . 36
Living Area Water System ........... 36
Filling Water Tank . . . . . . . . . . . . . . 37
External Water Connection . . . . . . . . 37
Water Pump . . . . . . . . . . . . . . . . . . . 39
;

TABLE OF CONTENTS
SUBJECT
PAGE NO.
Water Heater . . . . . . . . . . . . . . . . . . 39
Kitchen Facilities . . . . . . . . . . . . . . . . . 40
All-Electric Refrigerator . . . . . . . . . . 40
Kitchen Range J Oven . . . . . . . . . . . . 41
Kitchen Sink and Faucet . . . . . . . . . . 44
Water Purifier . . . . . . . . . . . . . . . . . . 45
Bathroom Facilities . . . . . . . . . . . . . . . . 45
Standard Toilet . . . . . . . . . . . . . . . . . 45
Recirculating Toilet. . . . . . . . . . . . . . 46
Bathroom sink and
Shower Control Valve . . . . . . . . . . 47
Shower Head .. . ........... ·. . . . 48
Bathroom Warm Air Duct . . . . . . . . . 49
Bathroom Exhaust Fan . . . . . . . . . . . 49
Venti~tion . . . . . . . . . . . . . . . . . . . . . . 49
Windows ............ . ......... 49
Ceiling Vents .................. 50
Roof - Mounted Air Conditioner . . . . . . . 50
Furnace ........................ 51
Furniture . . . . . . . . . . . . . . . . . . . . . . . 54
In Case of Emergency . . . . . . . . . . . . . . . . . 59
Four-Way Hazard Warning Flasher .... 59
Emergency Starting ............... 59
Jump Starting . . . . . . . . . . . . . . . . . . . . 59
Engine Coolant Caution . . . . . . . . . . . . 61
Jack Usage Instructions . . . . . . . . . . . . . 61
Towing ................ . ........ 63
Freeing Vehicle From Sand, Etc. . . . . . . 64
Emergency Exit . . . . . . . . . . . . . . . . . . 64
Fire Extinguisher . . . . . . . . . . . . . . . . . 64
Appearance Care . . . . . . . . . . . . . . . . . . . . 65
Care and Cleaning of Interior . . . . . . . . 65
General Information . . . . . . . . . . . . . 65
iii
SUBJECT
PAGE NO.
Lap B elt Care . . . . . . . . . . . . . . . . . . 65
Interior Glass . . . . . . . . . . . . . . . . . . 65
Kitchen Sink . . . . . . . . . . . . . . . . . . 67
Vacuum Cleaner . . . . . . . . . . . . . . . . 67
Dr apery Care . . . . . . . . . . . . . . . . . . 67
Cleaning Fabrics . . . . . . . . . . . . . . . . 67
Cleaning Fabrics (With
Cleaning Fluids) . . . . . . . . . . . . . . 68
Cleaning Fabrics (With
Detergent Foam Cleaner) . . . . . . . 68
Rem oval of Specific Stains . . . . . . . . 68
Exterior Appearance Care . . . . . . . . . . . 69
Bright Metal Parts . . . . . . . . . . . . . . 69
Exterior Glass . . . . . . . . . . . . . . . . . . 69
Polishin g and Waxing .......... .. 69
Touch-Up Paint ... . ............ 70
Undercoating . . . . . . . . . . . . . . . . . . 70
Service and Maintenance . . . . . . . . . . . . . . 71
Maintenance Schedule . . . . . . . . . . . . . 71
Accessibility . . . . . . . . . . . . . . . . . . . . . 72
Exterior Compartments . . . . . . . . . . . 72
Engine Accessibility . . . . . . . . . . . . . 72
Engine Compartment Light . . . . . . . . 74
Hoisting Instructions . . . . . . . . . . . . . . . 74
Lubrication Details . . . . . . . . . . . . . . . . 75
Engine . . . . . . . . . . . . . . . . . . . . . . . 75
Transmission .................. 77
Final Drive . . . . . . . . . . . . . . . . . . . . 78
Steering System . . . . . . . . . . . . . . . . 78
Brake System .................. 79
Servicing Details . . . . . . . . . . . . . . . . . . 79

TABLE OF CONTENTS
SUBJECT
PAGE NO.
Engine Cooling System . . . . . . . . . . . 79
Engine Fuel System . . . . . . . . . . . . . 81
Carburetor . . . . . . . . . . . . . . . . . . . . 82
Chassis Electrical System . . . . . . . . . 83
Wheels and Tires . . . . . . . . . . . . . . . 86
Front Suspension .. ...... ....... 89
Rear Suspension . . . . . . . . . . . . . . . . 90
Underbody Maintenance ... ....... 91
LP Gas System . . . . . . . . . . . . . . . . . 92
Living Area Electrical System . . . . . . 93
Onan Motor Generator Maintenance . 94
Standard Toilet ................ 104
Recirculating Toilet ...... . ...... 1 OS
Draining Holding Tank ........... 106
Draining Living Area Water System .. 106
Water Tank Filter ....... ...... . 108
iv
SUBJECT
PAGE NO.
Sanitizing Living Area
Water System ................ 109
Winterization .................. 110
Vehicle Storage . . . . . . . . . . . . . . . . . 110
Vehicle Trip Preparation ...... . ... 112
General Data and Specifications ......... 115
Owner Assistance .. ... .... . . ........ 122
GM of Canada Limited-Zone Offices ... 123
U.S. Zone Territories ............... 124
U.S. Zone Offices .................. 125
General Motors Overseas Offices . . . . . . 12 5
24-Hour Phone Assistance .......... 12 7
Maintenance Manual and Parts Book .. 127
Facts About Gasoline Mileage ........ 128
Index .......................... 129
Gas Station Information .. Inside Back Cover

IMPORTANT INFORMATION
ON
VEHICLE LOADING
CAUTION
The components of your vehicle are designed to
provide satisfactory service
if the vehicle is not
loaded in excess
of either the Gross Vehicle
Weight Rating (GVWR) or the maximum Front
and Rear Gross Axle Weight Ratings (GAWR's)
specified
on the vehicle identification number
(VIN) plate located behind the right front access
door. Overloading can create serious potential
safety hazards
and can also shorten the service
life
of your vehicle. Yaur dealer can advise you
concerning proper loading conditions
of your
vehicle.
When loading the MotorHome, it is impor-
tant that it is properly loaded. All items should
be loaded as centrally and as low as possible.
This is essential to maintain proper vehicle
handling. Even though a single item may not
weigh much alone, several of these items may
have considerable weight. Proper loading is
essential.
MAXIMUM FRONT AND REAR AXLE
WEIGHTS CAS MANUFACTURED)
The weight of the cargoload must be properly
distributed over both the front and rear axles,
although not necessarily evenly. The plate shows
the maximum weight that the front axle can
carry (front GAWR) and the maximum weight
that the rear axle (rear GAWR) can carry. The
GVWR represents the maximum permissible
loaded weight of the vehicle and takes into con-
sideration the engine, transmission, frame, brake .
axle
and tire capabilities. Actual front and rear
end weights at the ground can only be deter-
mined by weighing the vehicle. This can be
accomplished through highway weigh stations
or other such commercial facilities. For assis-
tance in this regard, consult your dealer. Care
should also be exercised to see that the cargo-
load is distributed on both sides of the centerline
of the vehicle as equally as possible.
GVWR RATING 11 ,700 LBS.
REAR GAWR
7,500 LBS.
MAXIMUM TOTAL WEIGHT AT GROUND 11,700 LBS .
*Curb weight is the maximum weight of the vehicle without driver, passengers,
or cargo, but does include fuel and coolant.
Vehicle LoadinR (ZEO 6581)
1
D

GVWR RATING 11 ,700 LBS.
FRONT GAWR
4,200 LBS.
REAR GAWR
7,500 LBS . D
MAXIMUM TOTAL WEIGHT AT GROUND 11,700 LBS .
* Curb weight is the maximum weight of the vehicle without driver , passengers,
or cargo, but does include fuel and coolant.
Vehicle Loading (ZEO 6582)
0 GENERAL MOTORS CORPORATION 0
WARRIJITY IIAY 8£ VOIDED IF WEICHT EXCEEDS ANY OF RATINGS SHOWN . GROSS
VEHICU WEICHT INCLUDES WEICHT OF BASE VEHICU , AU ADDEO EQUIPMENT , DRIVER
AIIO PASSENGERS , AIIO AU NOP£RTY lOADED INTO OR ONTO VEHIClE .
RATINGS IN POUNDS · AS IIAIIUFACTUREO
GIIOSS Y[HICU wt:ICH T fOI THIS Y[HICl£
IWll- fiOIIT UID wt:IGHT AT CIIOOIID
Y£HICL[ ID!NTifiCA 11011 NO
0 0
Vehicle Identification Plate
VIN {Vehicle Identification Number) Plate
The vehicle identification number plate shows
the GVWR and the front and rear GAWR's for
the vehicle to which they are attached.
Gross Vehicle Weight (GVW) is the weight of
the vehicle itself, all items added to the vehicle
after it has left the factory, the driver and all
occupants, and everything that is loaded into
(or onto) the vehicle. The GVW must not ex-
ceed the GVWR and the front and rear weights
2
of the loaded vehicle must not exceed the front
and rear GA WR's.
CAUTION
When using your vehicle to transport
luggage or other cargo, it is recom-
mended that the articles be secured in
place. This precaution will
help prevent
such items from becoming dangerous
projediles in the event of an accident.
EFFECT ON WARRANTY
Your New Vehicle Warranty does not apply to
any part of your vehicle "which has been subject
to misuse." Any part which fails because of over-
loading has been subject to misuse within the
meaning of this provision of the warranty.
TIRES
It is important that the tires on your vehicle
be of the proper size, and be properly inflated .
It is important to avoid over-inflation as well
as under-inflation. See
the SERVICE AND
MAINTENANCE section for proper tire infla-
tion pressures.

BEFORE DRIVING YOUR MOTORHOME
DRIVER CHECK LIST
BEFORE ENTERING VEHICLE
1. See that windows, mirrors, and lights are
clean.
2. Check inflation condition of tires.
3.
Turn off LP gas valve on LP tank (See
CAUTION under "LP Gas System" in SER-
VICE AND MAINTENANCE section).
4. Check that sewer connection, all external
compartments , and filler openings are prop-
erly stowed or closed and I or locked.
5.
Check that items stored on exterior of ve-
hicle are securely lashed.
6.
Will any items stored on exterior of vehicle
present a clearance problem?
7. Are there any rocks, posts , low-hanging lines
or branches under or near the vehicle you
must avoid before driving away?
8. Check that area to rear of vehicle is clear if
about to back-up.
BEFORE DRIVING OFF
1. Lock entrance door.
2.
Check that all windows and vents are in
suitable position for travel (See "Engine
Exhaust Gas Caution (Carbon Monoxide)"
at the beginning of STARTING AND OP-
ERATING VEHICLE section.
3.
Turn off living area water pump.
4. Check th at refrigerator door is fastened.
5. Check that nothing heavy is stored in over-
head or high cabinets - it may fall out en-
route and cause injury.
6. Close and secure bathroom, closet, and all
cabinet doors and drawers.
7. Check that counter tops , range top, kitchen
sink, table tops and shelves are clear-even
s mall items may become projectiles in an
accident. It is not safe to cook while under-
way-hot food or liquid may scald in a sud-
den stop or accident.
8. Be sure all LP gas controls on furnace,
range I oven and optional gas Ielectrical
refrigerator are turned off.
3
9. Check that all interior stowage is securely
held.
10. Check that all lights and switches are set in
positions suitable for travel.
11. Position driver's seat for comfort.
12. Check that driver's and front passenger's
seat, and any other swivel-mounted seats
are locked in position.
13 . Check adjustment of inside and outside
mirrors. Adjust curtains where necessary for
visibility.
14.
If vehicle is equipped with optional Electro-
Level System , check that TRAVEL switch
is
positioned in "HOLD."
15 . Fasten lap belts.
16 . Check that warning light bulbs light when
key is turned to ON or START p6sition .
17.
With engine running , check that warning
lights are now out.
18.
Be sure you understand your vehicle and
how to operate it and its systems safely.
19.
It is recommended that you refer to ''TRIP
TIPS" and "DRIVING TIPS" at the end
of this section for additional information .
CAUTION
Counter and table tops should not be
used for storage when underway-even
for light weight, small articles. They
might become dangerous projediles dur-
ing
an accident. Heavy items stored in
overhead or waist-high cabinets
may
also cause injury if a sharp turn or stop
causes them to topple against inside of
cabinet door, forcing it open. Store
canned goods
and other heavy items
down low.
INSIDE REARVIEW MIRROR
Switch inside mirror (see next page) to night
position to reduce glare from following head-
lights.
To raise or lower mirror to achieve desired
field of view, grasp mirror and exert sufficient
pressure by pushing or pulling up, down, or
sideways.
. -' ... -
., -.:---·

DAY - NIGHT LEVER
Inside Rearview Mirror
KEYS
Two sets of keys are furnished with your ve-
hicle. Each key has a different cross section so
that it can be inserted only in certain locks.
Key with Square Head-For ignition switch only.
Key with Oval Head-For door lock, glove box ,
water tank fill door and external utilities com -
partment .
NOTE: A third key is provided for the refrigerator.
The code number of each key is stamped on
the "knock out" plug in the key head. Your
dealer removed these plugs and placed them
with the spare set of keys in the special key
envelope that was given to you at the time of
delivery. For your protection:
• Record the numbers on the key envelope and
discard the key plugs.
• Keep the key envelope in a safe place such
as your wallet, NOT IN THE VEHICLE.
In the event the original keys are lost, dupli-
cates can be made by your dealer or a locksmith
using the key code information. When leaving
the vehicle unattended, remove the keys and
lock the entrance door.
ENTRANCE DOOR
DOOR LATCH
Door must be locked from outside the vehicle
by inserting the key into the door key lock and
turning. To unlock, turn in the clockwise direc-
tion. Reverse the direction to lock.
To lock door from inside vehicle, push the
lock button DOWN. To unlock and open door
from the inside , pull the lock button UP and
pull on inside door handle.
REMINDER: Always lock entrance door
when driving for greater security in the
event of an accident, to help keep chil-
dren from inadvertently opening door,
DOOR LATCH
v
Entrance Door Latch
4
-

MOVE SEAT LOCKING
LEVER OUTWARD TO RELEASE
Seat Track Mechanism ( Typical)
a~d for security against entry by un-
welcome persons while momentarily
stopped.
SEATS
DRIVER AND FRONT PASSENGER SEATS
The driver and front passenger seats may
be adjusted to suit an individual's preference.
To move seat forward or backward, simply re-
lease the seat locking lever located on the aisle
side
of the seat. Once released, exert slight body
pressure in the direction desired. Release lever
to lock the seat in the desired position.
The seats can be swiveled to provide easy
entrance and exit. To swivel seat, depress seat
swivel lever (as shown), then rotate seat. The
seats are designed to lock only in the forward
facing position.
CAUTION
After adjusting any seat, always use
body weight to push forward and
backward on seat and to twist seat
to assure that seat adjusters and swivel
lock are securely engaged in position.
Motion
of the seat indicates that
latches are not properly engaging. If
the seat is not locked in position, the
chance of injury and/or the severity of
injury could be increased in the event
of an accident. If this condition per·
sists take the vehicle to your dealer
for service.
Seat Swivel Mechanism (Typical)
Arm Rest in the DOWN Position (Type 1)
Arm Rest in the UP Position (Type 1)
5

Lower in~ Arm Re st (Type 1)
DO NOT adjust the driver's seat swivel
or fore and aft mechanism while the
vehicle is moving. The seat could move
unexpededly causing loss of control
of the vehicle.
Arm Rests
The driver and front passenger seats are
equipped with arm rests.
Type 1
When type 1 arm rests are being used, they
should be placed in the DOWN position (as
shown). To use, grasp arm rest by the front and
lift, until arm rest is in the UP position (as
Arm Rest in the UP Position (Type 2)
6
Arm Rest in the DOWN Position (Type 2)
shown). To lower, grasp arm rest by the front
and lift, then lower assembly (as shown) into
seat.
Type 2
When the type 2 arm rests are not in use raise
them into the UP position (as shown) . To use,
simply lower the arm rest into the DOWN posi-
tion (as shown).
LIVING AREA SWIVEL SEATS
The optional swivel seats (behind the
driver's seat) may be swiveled or adjusted for
height as described in the following:
Swiveling Seat
1. To swivel seat to desired position, depress
seat locking lever (straight handled lever lo-
cated on right side of pedestal-below right side
of seat in travel position).
2. To temporariy hold seat in position, while
vehicle is
stationary, tighten seat friction lever
(angled lever on the left side of pedestal-below
left side of seat in travel position) by rotating
lever clockwise.
3.
To return swivel seat to the correct posi-
tion for traveling, first loosen the swivel seat
friction lever by rotating counterclockwise 11 h
to 2 turns.

Releasin~ Swivel Seat LockinR Lever
4. Before driving off, ALWAYS rotate seats
to travel position (both swivel seats facing each
other). Check that swivel seat is locked in posi-
tion by attempting to rotate seat.
5.
If either living area swivel seat does not
lock properly, perform swivel seat "Height Ad-
justment" as described below. If swivel seat
mechanism still does not lock properly , take
the vehicle to your dealer for service.
Height Adjustment
1. Using two V:z " wrenches loosen the collar
retaining bolt and nut assembly.
2. D-epress swivel
seat locking lever. Then
raise or lower seat to desired height. Be sure
swivel_ seat locking lever enters one of the holes
provided in seat tube by attempting to rotate
seat. If seat rotates, locking lever is not entering
hole. Readjust seat height until it does. Then
tighten collar retaining bolt and nut assembly.
LAP BELTS
Your GMC Motor Home is equipped with lap
belts in the driver and front passenger seating
position( s), as well as certain other seating loca-
tions in the MotorHome. It is recommended
that while the vehicle is in motion, all occupants
remain seated and keep lap belts buckled snugly
at all times.
7
Positionin~ Swivel Seat Friction Lever
Ad justin~ Hei~ht of Swivel Seat
CAUTION
To help lessen the chance of injury
and/or the severity of injury in the
event
of an accident:
Always put on lap belt with both arm
rests in the DOWN position for Type 1
arm
rests, or in the UP position with
Type 2 arm rests, taking care that lap

Lap Belt (Front Seating Positions)
belt is not wedged between arm rest
and seat. Once lap belt is buckled
snugly,
the arm rest may be positioned
for use.
DO NOT route lap belt In front of,
through for type 1, or on top of the arm
rest assembly when it is in use. See
illustrations for proper routing of lap
belts with each type of arm rest.
DO NOT reroute lap belts over arm
rests of optional living area swivel
seats. To help achieve a snug flt and
low lap belt position, these belts MUST
be routed up between seat cushion
and arm rests.
A
snug flt and a low lap belt position
are essential to lessen the chance of in-
jury in the event of an accident, be-
cause this spreads the force by the lap
belt in a collision over the strong hip
bone structure rather than across the
soft abdominal area. Never use the
same belt for more than one person at
a time; avoid wearing belts in a
twisted condition; do not allow belts
or hardware to become damaged by
being pinched between the seat struc-
tural (metallic) members or in the door.
8
The driver and front passenger seating posi-
tions (Type A)-have belt retractors which are
designed to automatically take up excess web -
bing.
• Adjust seat to your satisfaction and sit erect
and well back in the seat.
• In a single motion, pull webbing across lap
far enough to permit inserting metal latch
plate end of lap belt into the buckle, until a
snap is heard. If webbing is not pulled out far
enough to reach the buckle, let the belt re-
wind into the retractor to release lock mech-
anism, so belt can be pulled out to the proper
length.
• Position lap belt across lap as LOW ON
HIPS as possible. To reduce the risk of slid-
ing under the belt during an accident, adjust
to a SNUG FIT by pulling belt firmly
across
lap in direction of retractor so it can
take up slack.
• When no longer in use, driver and front pas -
senger lap belts can be stowed by allowing
them to rewind into their retractors.
NOTE: Take care not to let the lap belt twist
while it is being rewound into the retractor pro-
vided for driver and front passenger seat. The
bulk of the twisted belt may cause the retractor
to
jam so it will not rewind further, while at the
same time the retractor's locking mechanism
may prevent the belt from being withdrawn . If
a belt should become jammed, you may be able
to release it by working the belt in and out until
the belt rewinds far enough to unlock. If lap
belt remains jammed or other parts of the re-
straint system do not operate properly take the
vehicle to your dealer for service.
If the Driver and Front Passenger Seating Posi-
tions are not equipped with belt retractors (Type
8),
the lap belts should be positioned and secured
as above, and adjusted to a SNUG FIT by pull-
ing on the end of the belt extending from the ad-
justable latch plate or buckle. These belts are
lengthened and unfastened like those described
below.
Lap belts
at seating positions other than the
driver and front passenger positions- should be
positioned and secured as above, and adjusted
to a SNUG FIT by pulling on the end of the
belt extending from the adjustable latch plate or
buckle.

• To lengthen the lap belts at these seating
positions, place adjustable latch plate or
buckle at right angle to the belt webbing and
pull on adjustable latch plate or buckle; belt
should then slide easily through the adjust-
ment feature.
• To unfasten seat belts, depress push button
in center of buckle.
LAP BELT INSPECTION
• Periodically inspect belts, buckles , latch
plates , retractors, and anchors for proper
operation, and also for damage that could
lessen the effectiveness of the restraint sys-
tem.
• Keep sharp edges and damaging objects
away from belts and other parts of restraint
system.
• Replace belts if cut, weakened, frayed, or
subjected to collision loads.
• Check that the anchor mounting bolts are
tight.
• Have questionable parts replaced.
• Keep belts clean and dry.
• Clean only with mild soap solution and luke-
warm water.
• Do not bleach or dye belts since this may
severely we aken them.
CHILD RESTRAINT
Children in vehicles should be restrained to
lessen the risk of injury in accidents, or sudden
stops. In using any infant or child restraint sys-
tem, read and comply with all installation and
usage instructions.
All unused lap belts near the child should be
s towed properly to help prevent them from
striking the child in the event of an accident. Lap
belts without storage provisions should have
buckles latched and belts adjusted to remove
slack.
If a child is traveling in a vehicle not equipped
with an appropriate infant or child restraint sys-
tem, the following precautions should be taken:
1. Infants unable to sit up by themselves
should be restrained by placing them in a cov-
ered , padded bassinet placed crossways in the
9
Living Area Swivel Seats
Positioned for TRAVEL
vehicle (widthwise) on the seat. The bassinet
should be securely restrained with the regular
vehicle belts.
2.
Children able to sit up by themselves
should be placed on a seat and lap belted. Never
allow a child to stand or kneel on any seat or
elsewhere in the vehicle, once it is underway.
TRAILER HAULING
Towing a trailer will affect handling, durabil-
ity and economy. Maximum safety and satisfac-
tion depends upon proper use of correct equip-
ment and avoiding overloads and other abusive
operation.
The maximum loaded trailer weight which
you can pull with your vehicle depends on what
special equipment has been installed. GMC
does not recommend towing any trailer OVER
1,000 POUNDS GROSS TRAILER WEIGHT.
To assist in attaining good handling of the
Vehicle Trailer Combination, it is important
that the trailer tongue load be maintained at
approximately 10% of the loaded trailer weight.
Tongue loads can be adjusted by proper distri-
bution of the load in the trailer, and can be
checked by weighing separately the loaded
trailer and then the tongue.

The allowable passenger and cargo load
(GVW) of this vehicle is reduced by an amount
equal to the trailer tongue load on the trailer
hitch.
CAUTIONS
1. Trailer brakes are required on trailen
over 1,000 lbs. loaded weight.
2.
DO NOT tap Into vehicle's hydraulic
brake system if operation of the
troller brake system requires more
than
0.02 cu.-in. of fluid displace-
ment from the vehicle's master cyl·
inder. The vehicle's master cylinder
fluid capacity will not be sufficient to
operate both vehicle and trailer
brakes under all conditions of use if
more than 0.02 cu.-in. of fluid dis-
placement is required.
3. Whenever a trailer hitch
Is removed,
be certain to
have any mounting
holes in underbody properly sealed
to prevent possible entry of exhaust
fumes, dirt or water. (See "ENGINE
EXHAUST GAS CAUTION" in the fol·
lowing section.)
OPERATION IN
FOREIGN COUNTRIES
Your vehicle's engine is designed to operate
on unleaded fuel of approximately 91 research
octane
number.
If you plan to operate your vehicle outside
the continental limits of the United States or
Canada, there is a possibility that the best fuels
available
are so low in anti-knock quality that
excessive knocking and serious engine damage
may result from their use. To obtain informa-
tion
on the quality of fuels available in the
countries in which you plan to travel write to
GMC Truck & Coach Division, General Motors
Corporation, Pontiac, Michigan 48053 (or in
Canada write to General Motors of Canada
Limited, Owner Relations Department, Oshawa,
Ontario), giving:
• The vehicle identification number (from
plate attached to right side of dash panel or
from the registration slip or title).
10
• The country or countries in which you plan
to travel.
It is recommended that you do not operate
your vehicle in any country not having fuels
meeting the requirements of your vehicle's en-
gine as these MAY CAUSE ENGINE DAM-
AGE for which GMC Truck & Coach is not
responsible under the terms of the New Vehicle
Warranty or Emission Control Systems War-
ranty.
TRIP TIPS
A small amount of preparation prior to a trip
will save a lot of time when traveling.
When loading heavy items into your Motor-
Home try to store them as low and centrally as
possible.
This will aid performance and handling
of the vehicle. Remember even though an item
may not weigh much individually the sum
weight of several of these articles may be sub-
stantial.
CAUTION
When transporting luggage or other
cargo
in your MotorHome, it Is recom-
mended that all articles be secured In
place. This precaution will help prevent
such items from becoming projediles in
the event of an accident.
The following emergency equipment is recom-
mended, at minimum:
•
Fire Extinguisher
•
Hydraulic Jack and Lug Wrench
•
Spare Tire
•
Flashlight
•
First Aid Kit
•
Road Emergency Flares
•
Basic Tool Kit
NOTE: If vehicle is equipped with (optional>
fender skirts, be sure tool kit includes a No . 2
cross-recessed screwdriver
and 9I 16" wrench or
socket to
aid in fender skirt removal, if neces·
sary to change a rear tire.
These items might be found useful: J

• Plastic Bucket and Funnel
• Water Hose and "Y" Connection , in case of
two units on one water system
• Level
• Shovel
• Spare Automotive Fuses and Bulbs
• 2" x 4" Chocks or Blocks
The following checks should be made before
starting on a trip:
OUTSIDE VEHICLE
1. Run through "Driver Check List" at the
beginning of this section.
2.
Check engine oil level.
3. Check fluid levels on batteries.
4. Visually inspect radiator coolant level.
5.
Fill windshield washer reservoir.
6. Check tire pressure , and inspect tires for
road damage , foreign objects.
7. Check operation of all outside lights.
8.
Check that all exterior vents are unob-
structed.
9. Check and empty holding tank.
INSIDE VEHICLE
1. Check operation of optional Electro-Level
System.
2. Check gasoline supply.
3. Check transmission fluid level.
4.
Check power steering fluid level.
5.
Check operation of windshield wipers and
windshield washers.
6. Check operation of brakes.
7. Check operation of interior lights.
8.
Check all appliances and fixtures for proper
operation.
9. Check operation of motor generator.
11
10. Check and fill living area water system.
11. Check and fill LP gas tank.
12. Check Maintenance Schedule folder to make
sure all periodic maintenance and safety
checks have been performed.
13. After the vehicle has been loaded, check to
see that the vehicle's Gross Vehicle Weight,
and front and rear axle capacities have not
been exceeded. This check should be made
fully loaded including passengers. (Refer
to the "IMPORT ANT INFORMATION
ON VEHICLE LOADING" section of this
manual for further information.)
Before leaving any camp-site make sure all
litter has been picked up.
When traveling in winter it is recommended
that the water tank not be filled until the des-
tination is reached. This will ensure that the
vehicle has thoroughly warmed up. The water
and holding tank systems should be drained be-
fore leaving for
home. Also, at this time, put
some non-toxic, non-flammable anti-freeze into
the sink and shower traps. Heat tape has been
found useful in preventing pipe freeze-up,
where power is available. Some non-toxic, non-
flammable anti-freeze
in the holding tank will
help keep the tank contents from freezing. The
recirculating toilet should be drained immedi-
ately at the end of the trip.
DRIVING TIPS
The MotorHome driver controls are auto-
motive-type to make the vehicle as comfortable
as possible. The steering and braking controls are
power assisted to help make driving as effortless
as possible. However, it must be remembered
that the MotorHome is much higher, wider,
and heavier than a family automobile.
Since the MotorHome is 9-ft. 2-in. high, with
the roof mounted air conditioner, additional care
is required to watch for low bridges and over-
passes.
TREE BRANCHES CAN DO CON-
SIDERABLE DAMAGE TO THE WIND-
SHIELD OR ROOF OF THE VEHICLE TOO,
SO WATCH FOR THEM.
The MotorHome power-to-weight ratio is
lower
than that of the average automobile.
Therefore it is essential to compensate for less
acceleration when moving into traffic, or when
passing another vehicle.

GMC MOTORHOME NOTES
12

STARTING AND OPERATING VEHICLE
ENGINE EXHAUST GAS CAUTION
(CARBON MONOXIDE)
Avoid inhaling exhaust gases because they contain carbon monoxide
which by itself is colorless and odorless. Carbon monoxide is a dangerous
gas that can cause unconsciousness and is potentially lethal.
If, at any time, you suspect that exhaust fumes are entering the Motor-
Home from
any source have the cause determined and corrected as soon
as possible. If you must drive before the cause is corrected, drive only with
ALL except two rear windows FULLY open and heating or cooling system
adjusted for maximum ventilation (see below).
The
best protection against carbon monoxide entry into the vehicle body
• is a properly maintained engine exhaust system, body and body ventilation
system. It is
recommended that the exhaust system and body be inspected
by a competent mechanic:
• Each time the vehicle is raised for lubrication or oil change.
• Whenever a change is noticed in the sound, alignment, or appearance of
the exhaust system.
• Whenever the exhaust system, underbody or rear of the vehicle is
damaged.
See your Maintenance Schedule folder for inspection procedure.
To allow proper operation of the vehicle's ventilation system, keep front
inlet grille clear
of snow, leaves, or other obstructions at all times.
OCCUPYING A PARKED VEHICLE WITH ENGINE RUNNING FOR AN EX-
TENDED PERIOD OF TIME IS NOT RECOMMENDED.
Do not run engine in conflned areas such as garages any more than
needed to move vehicle in or out of area. When vehicle is stopped in an
UNCONFINED area with the engine running for any more than a short
period of time, adjust heating or cooling system to force outside air into
the vehicle as follows:
1.
On vehicles not equipped with automotive air conditioning, set fan to
medium or high speed and upper control lever to any position except "OFF.''
Lower control lever should be adjusted to any position except extreme left
"RECIRC."
2. On vehicles equipped with automotive air conditioning, set fan to
medium or high speed, upper control lever to any position except "OFF,"
and lower control lever to any position except extreme left "RECIRC."
The two rear windows should be closed while driving to avoid drawing
dangerous exhaust gases into the vehicle through those openings . In addi-
tion, it is recommended that roof vent(s) be closed while driving. If, for
some reason, a rear window or roof vent must remain open for a period
while driving, or electrical wiring or other cable connections to a trailer
must pass through tHe seal between them and the body, the following
precautions should be observed.
• Close all windows.
e Adjust heating or cooling system to force outside air into the vehicle as
described in Step 1 or 2 above but with fan set at high speed.
e Air vents in or under the instrument panel should be fully open.
It is important that the inside engine cover be properly seated to prevent
possible leakage of exhaust fumes into the vehicle through this opening.
See "LIVING AREA FACILITIES CAUTION (CARBON MONOXIDE)" on
page 31.
13
---

STEERING COLUMN CONTROLS
ANTI- THEFT STEERING
COLUMN LOCK
The anti-theft ignition switch, located on the
right side of the steering column, has five posi-
tions:
A B c 0
G
A • CRUISE CONTROL ENGAGE BUTTON
B •
TURN SIGNAL LEVER
C • TILT - AWAY STEERING WHEEL LEVER
0 . IGNITION SWITCH
E HORN BUTTON
F HAZARD
WARNING FLASHER BUTTON
G -TRANSMISSION
SELECTOR LEVER
Steerin~ Column Controls
Anti-Theft Steerin~ Column Lock
14
• ACCESSORY -Permits operation of electri-
cal accessories when the engine is not run-
ning . To engage , push key in and turn toward
you (counterclockwise).
• LOCK - Normal parking position, locks igni-
tion and provides added theft protection by
preventing normal operation of steering
wheel and shift controls. Key cannot be
turned to "LOCK" position and removed
until transmission is placed in "PARK."
• OFF -Permits turning engine off without
locking steering wheel and shift contr~s .
• RUN-Normal operatipg position.
• START -Permits engagement of starter .
NOTE: The anti-theft steering column lock is not
a substitute for the parking brake. Always set
the parking brake when leaving the driver's seat
unattended.
If difficulty is experienced in turning the igni-
tion key and lock knob to unlock the ignition,
attempt to turn the steering wheel as hard as
possible in the direction the wheels are turned.
At the same time turn the ignition-lock knob in
a clockwise direction with as much effort as you
can apply with your own hand . Do not attempt
to use a tool of any kind to apply additional
force on the lock knob, as this could break the
knob .
PARKING
When leaving the driver's seat unattended:
• SET PARKING BRAKE FIRST. (See note
on page 19.)
• Place transmission selector lever in "PARK."
• Turn key to LOCK position.
• Remove key from steering column lock (the
buzzer will remind you).
• Lock entrance door if leaving vehicle.
NOTICE : Do not leave your vehicle unattended
with the engine running. If the engine should
overheat while your vehicle is unattended, the
temperature warning light or gauge would go
unheeded which could result in extensive dam-
age to your vehicle.