Automatic transmissions are often seen as mysterious and overly complicated, but much of the guesswork has been simplified to its basic elements in this easy-to-follow guide. This book covers the identification process, operation, diagnostic pointers, common failures, and repair and rebuild procedures for the 6L80 transmission. Upgrades that are available to make the 6L80 more robust are covered as well as the companies that offer upgrades.
This detailed, step-by-step instructional manual is authored by engineer, instructor, speaker, and author Steve Garrett. Meticulous step-by-step photos of the rebuild process are featured along with torque specifications and identification of all major and most minor components.
TABLE OF CONTENTS:
Chapter 1: GM 6L80 Transmissions
- TEHCM
- Gearsets
- Transmission Identification
- RPO Identification
- Transmission Tag Information
- Inspection and Service
- Tools
- Power and Ground Testing
- Electrical Current Flow
- Adhesives, Sealers, and Lubricants
- Cooler Flushing
Chapter 2: Mechanical Electronic Components
- Range Reference Chart and Power Flow
- 6L80 Electronic Components
- TEHCM Shared Data and Additional Inputs
- Scan Tool Diagnosis, Data Parameters, DTCs, and Programming
- Adaptive Learning
- On-Vehicle Repairs and Adjustments
- TEHCM, TFP, TFT, Speed Sensor, and IMS Replacement
- Pressure Testing and Road Testing
- Cleaning and Inspection
Chapter 3: Component Service Disassembly and Assembly
- Torque Converter
- Holding Fixture
- Extension Housing
- Oil Pan Filter
- Pass-Through Connector
- TEHCM/Valve Body
- Pump Service
- 1-2-3-4/3-5-R and 4-5-6 Clutch Removal and Disassembly
- 1-2-3-4/3-5-R Clutch Assembly
- 4-5-6 Clutch Assembly
- 2-6 Center Support, Low/Reverse Clutch, and Low Sprag Removal
- 2-6 Clutch Assembly
- Component Service Assembly
Chapter 4: TEHCM Inspection and Testing
- GM Factory Method
- Aftermarket Method
- Valve Function
- Valve Body Assembly and TEHCM Installation
- Valve Body, Pump Valve Repair Kits, and Additional Components
- Oil Filter and Oil Pan Installation
- Fluid, Capacity, Checks, and Operation
- On-Vehicle Repairs and Adjustments
- Adaptive Learning
- Using a 6L80 in a Non-GM Application or GM Application Not Originally Equipped
- Other Aftermarket Products and Non-Internal Components
- Diagnostic Pointers
Appendix
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