Chevrolet 2008 Silverado 1500 Pickup Owner's Manual page 129

Tow/Haul Mode (Allison Transmission
®
or Hydra-Matic 6-Speed Automatic
Transmission)
®
If your vehicle has an Allison or Hydra-Matic
automatic transmission
The tow/haul mode adjusts the transmission shift pattern
to reduce shift cycling, providing increased performance,
vehicle control, and transmission cooling when towing
or hauling heavy loads.
Turn the tow/haul mode on and off by pressing the
button, located on the end of the shift lever. When the
tow/haul is on, a light on the instrument panel cluster will
come on.
See Tow/Haul Mode Light on page 3-54 for more
information.
Also see "Tow Haul Mode" under Towing a Trailer on
page 4-55 for more information.
®
6-speed
®
, it has a tow/haul mode.
2-35