Cadillac XT4 Owner's Manual page 208

The engine has a fast warm-up
glow plug system. The wait-to-start
light will illuminate for a much
shorter time than most diesel
engines, due to the rapid heating of
the glow plug system.
2. If the engine does not start after
15 seconds of cranking, wait
one minute for the cranking motor
to cool, then try the same step
again.
If you are trying to start the engine
after you have run out of fuel, follow
the steps in Running Out of Fuel
(Diesel) 0 269.
When the engine is cold, let it run for
a few minutes before driving. This lets
oil pressure build up. The engine will
sound louder when it is cold.
Cold Weather Starting
Use the recommended engine oil
when the outside temperature drops
below freezing. See Engine Oil 0 291.
When the outside temperature drops
below 18°C (0°F), use of the engine
heater is recommended.
See Fuel for Diesel Engines 0 264 for
information on what fuel to use in
cold weather.
If the Engine Will Not Start
If you have run out of fuel, see
Running Out of Fuel (Diesel) 0 269.
If the vehicle is not out of fuel, and
the engine will not start:
Press ENGINE START/STOP.
Immediately after the wait-to-start
light turns off, press ENGINE START/
STOP to start the vehicle.
If the light does not go off, wait a few
seconds, then try starting the engine
again. See your retailer for a starting
system check.
If the light illuminates and then turns
off, and it is known that the battery is
charged, but the engine still will not
start, the vehicle needs service.
If the light does not come on when
the engine is cold, the vehicle needs
service.
DRIVING AND OPERATING
If the battery does not have enough
charge to start the engine, see Battery
0 303.
Check that the correct engine oil has
been used and changed at appropriate
intervals. If the wrong oil is used, the
engine may be harder to start.
Make sure you use the proper fuel for
the prevailing weather conditions. See
Fuel for Diesel Engines 0 264.
If the engine starts, runs a short time,
then stops, the vehicle needs service.
Warning
Do not use petrol or starting aids,
such as ether, in the air intake.
They could damage the engine,
which may not be covered by the
vehicle warranty. They could also
cause a fire, which could cause
serious personal injury.
207