Reference Information
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2012 GMC Yukon XL, 2012 GMC Yukon, 2012 Chevrolet Tahoe, 2012 Chevrolet Suburban, and 2012 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
Schematic Reference
Automatic Transmission Controls Schematics
Description and Operation
- Electronic Component Description
- Transmission Component and System Description
- Transmission General Description
- Park - Engine Running
- Reverse
- Neutral - Engine Running
- Drive Range, First Gear Engine Braking
- Drive Range, First Gear
- Drive Range, Second Gear
- Drive Range, Third Gear
- Drive Range, Third Gear Default
- Drive Range - Fourth Gear
- Drive Range, Fifth Gear
- Drive Range, Fifth Gear Default
- Drive Range, Sixth Gear
- Fluid Passages
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions
Scan Tool Reference
Control Module References for scan tool information
Special Tools
- DT-47825 Control Solenoid Test Plate
- J 21867 Pressure Gauge
For equivalent regional tools, refer to Special Tools .