GMC SIERRA 1994 Manual page 75

4. If the engine does not start after 15 seconds of cranking, turn the
ignition key to OFF. Wait one minute for the starter to. cool, then try
the same steps again.
If you're trying
to
start your engine after
you've
run out of fuel, follow
the
steps
in "Running Out of Fuel" (see "Diesel Fuel Requirements and Fuel
System" in the Index).
When your engine is cold, let it run for a few minutes before you move your
vehicle. This lets oil pressure build up. Your engine will sound louder when
it's cold.
I
NOTICE:
If you're not in an idling vehicle and the engine overheats, you
wouldn't be there to see the coolant temperature gage. This
could damage your vehicle. Don't let your engine run when
you're not in your vehicle.
Cold Weather Starting (Diesel Engine)
The following tips will help you get good starting in cold weather.
Use SAE 1OW-30 oil when the outside temperature drops below freezing.
When the outside temperature drops below 0°F
(-
1 SOC), use your engine
coolant heater.
If you park your vehicle in a garage, you shouldn't need to use the coolant
heater until the garage temperature goes below 0°F (-18OC), no matter how
cold it is outside.
To use the engine coolant heater, first turn off the engine. Then open the
hood, unwrap the electrical cord and plug it in. It uses normal house voltage
( I 10 volts), but:
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