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PARK (P): This position locks your rear wheels. It is
the best position to use when you start your engine
because your vehicle cannot move easily. If your vehicle
has the Allison Transmission
®
, with the Power Takeoff
(PTO), use PARK (P) when starting. The Allison
Transmission
®
has a park pawl that is designed to hold
the weight of commercial medium duty trucks.
Therefore, the Allison Transmission
®
uses larger parts
than other automatic transmissions. These larger
parts may sometimes make a clunk noise when the
selector lever is moved from DRIVE (D) or REVERSE
(R) to PARK (P). This is normal and there is no damage
occurring during these shifts. When parked on a hill,
especially when loaded, you may notice an increase in
the effort to shift out of Park. See Torque Lock
(Automatic Transmission) under Shifting Into Park (P)
(Automatic Transmission) on page 2-50 for more
information.
{CAUTION:
It is dangerous to get out of your vehicle if the
shift lever is not fully in PARK (P) with the
parking brake firmly set. Your vehicle can roll.
Do not leave your vehicle when the engine is
running unless you have to. If you have left the
engine running, the vehicle can move
suddenly. You or others could be injured. To
be sure your vehicle will not move, even when
you are on fairly level ground, always set your
parking brake and move the shift lever to
PARK (P). See Shifting Into Park (P) (Automatic
Transmission) on page 2-50. If you are pulling
a trailer, see Towing a Trailer on page 4-67.
2-25