Automatic Transmission - GMC Motor Home Operating Manual

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COLD ENGINE
Fully depress accelerator pedal and slowly
release. With foot off the pedal, crank the engine
by turning the ignition key to the "START"
position-release when engine starts . If engine
starts but fails to run, repeat this procedure.
When engine is running smoothly (approx. 30
seconds) the idle speed may be reduced by
slightly depressing the accelerator pedal and
then slowly releasing.
CAUTION
Extended
running
of the
engine
(5
minutes or more) without depressing the
accelerator pedal, could cause damage
to the engine or exhaust system due to
overheating .
WARM ENGINE
Depress accelerator pedal about halfway and
hold while cranking the engine .
EXTREMELY COLD WEATHER (BELOW 0° F.)
OR AFTER VEHICLE HAS BEEN STANDING
IDLE FOR SEVERAL DAYS
Fully depress and release accelerator pedal
two or three times before cranking the engine .
With foot off the accelerator pedal, crank the
engine by turning the key to the start position
- release key when engine starts .
IF ENGINE FAILS TO START:
First, fully depress and release the accelera-
tor pedal several times, then remove foot
from accelerator pedal and crank engine .
If engine still does not start, fully depress
the accelerator pedal and hold to the floor
while cranking the engine .
If the engine has been flooded with gasoline,
it may start to run but not have enough
power to keep running. In this case, continue
cranking with the accelerator pedal fully de-
pressed until the engine cleans itself of excess
gasoline and runs smoothly.
If engine doesn't crank properly due to a
discharged main battery (automotive bat-
tery), place the battery switch in the "BAT
BOOST" position. Return the switch to the
"BAT NORMAL" position when engine
starts .
NOTE :
Do not continue cranking the engine for
more than 30 seconds at a time to prevent start-
ing overheating.
1 5
Transmission Shift Indicator
and
Speedometer
AUTOMATIC TRANSMISSION
The transmission selector lever is located on
the right side of the steering column and the
shift indicator is located in the bottom section of
the speedometer cluster on the dash .
"PARK"-Transmission lock when parking
or while starting the engine . Pull the selector
lever towards you to select or release this
position. Never move the selector lever to
"PARK" position unless the vehicle is com-
pletely stopped. "NEUTRAL" is the only
other position in which your Motor Home
may be started.
REVERSE "R"-For backing the Motor
Home. Bring the vehicle to a complete stop
before moving the selector lever into Reverse .
NEUTRAL "N"- The out-of-gear position .
It is provided for starting a stalled engine
while the Motor Home is in motion or run-
ning the engine while standing with brake
applied. DO NOT COAST IN NEUTRAL.
DRIVE RANGE "D"- The driving range for
city and highway driving. This position per-
mits the transmission to operate through its
complete range of gear ratios and to select
automatically the proper ratio for road and
load conditions .
SUPER RANGE "S"-Used when super per-
formance is needed for increased acceleration
in traffic, hill climbing, or "Engine Braking"

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