Description & Operation: Notes
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2003 GMC Sierra, 2003 GMC Cab & Chassis Sierra, 2003 Chevrolet Silverado, 2003 Chevrolet Cab & Chassis Silverado, and 2002 GMC Sierra. However, it is still accessible from the selected car via links, so may be relevant.
Allison 1000 series transmissions are torque converter driven, fully automatic, transmission systems. The 1000 series transmissions have up to 5 forward speeds, Neutral, and Reverse. The 5th range has an overdrive gear ratio. The 1000 series incorporates a variety of standard and optional design features. These design features are: