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GMC Yukon Denalid - Automatic Transmission Operation

GMC Yukon Denalid
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4. Before starting the engine, be sure to unplug
and store the cord as it was before to keep it
away from moving engine parts. If you do
not, it could be damaged.
How long should you keep the coolant heater
plugged in? The answer depends on the outside
temperature, the kind of oil you have, and
some other things. Instead of trying to list
everything here, we ask that you contact your
dealer in the area where you will be parking your
vehicle. The dealer can give you the best
advice for that particular area.
Automatic Transmission Operation
Your vehicle has an Hydra-Matic
®
6L80
automatic transmission, and has an electronic
shift position indicator within the instrument panel
cluster. The electronic shift position indicator
displays when the shift lever is moved out
of PARK (P).
There are several different positions for the
shift lever.
See “Driver Shift Control (DSC)” later in this
section.
145

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