Description & Operation: Introduction
WARNING: This page is about a different car, the 2002 GMC Sierra, 2002 GMC Cab & Chassis Sierra, 2002 Chevrolet Silverado, and 2002 Chevrolet Cab & Chassis Silverado. 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 five forward speeds, Neutral, and Reverse. The 5th gear is an overdrive gear ratio. The 1000 series incorporates a variety of standard and optional design features. These design features are:
- Direct mount to engine block.
- Flexplate drive.
- Torque Converter with a Torque Converter Clutch (TCC) and integral vibration damper.
- Three planetary gear sets.
- Five multiple disk clutches.
- Common hydraulic system.
- Two transmission fluid filtration systems.
- Control valve assembly.
- Electronically controlled automatic gear selection and clutch apply.
- Provision for remote transmission fluid cooler.
- Fill tube/dipstick provision on both sides of transmission.
- Parking pawl.
- Power Take Off (PTO) provision on both sides of transmission.
- Variety of available output yokes or flanges.