Chevrolet 2009 Avalanche Automobile User Manual


 
The vehicle has a shift stabilization feature that adjusts
the transmission shifting to the current driving
conditions in order to reduce rapid upshifts and
downshifts. This shift stabilization feature is designed to
determine, before making an upshift, if the engine
will be able to maintain vehicle speed by analyzing
things such as throttle position, vehicle load, and
hill grade. If the shift stabilization feature determines
that a current vehicle speed cannot be maintained, the
transmission does not upshift and instead holds the
current gear. In some cases, this may appear to be a
delayed shift, however the transmission is operating
normally.
The vehicle’s transmission uses adaptive shift controls.
Adaptive shift controls continually compares key
shift parameters to pre-programmed ideal shift
conditions stored in the transmissions computer. The
transmission constantly makes adjustments to improve
vehicle performance according to the way the vehicle
is being used, such as with a heavy load. During
this adaptive shift controls process, some shifts may
feel different as the transmission determines the
best settings for a particular shift.
Range Selection Mode
On vehicles with a Range Selection Mode, this feature
may be used to control the vehicle’s transmission.
To use this feature, do the following:
1. Move the shift lever to the M (Manual Mode).
2. Press the plus/minus button, to upshift or downshift
selecting the desired range of gears for current
driving conditions.
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