NHTSA ID Number: 10116864
Manufacturer Communication Number: 16-NA-027
Summary
This technical bulletin provides a procedure to replace 4-5-6 clutch hub to correct a condition of No Fourth, Fifth and Sixth Gears and/or Malfunction indicator Lamp Illuminated with DTC P0796
14 Affected Products
Vehicles
| CHEVROLET | SILVERADO 2500 | 2015-2016 |
| CHEVROLET | SUBURBAN | 2015-2016 |
| CHEVROLET | TAHOE | 2015-2016 |
| GMC | SIERRA 2500 | 2015-2016 |
| GMC | SIERRA DENALI | 2015-2016 |
| GMC | YUKON | 2015-2016 |
| GMC | YUKON XL | 2015-2016 |
SEOCONTENT-START
| Subject: | Diagnostic Tip for No Fourth, Fifth and Sixth Gears and/or Malfunction indicator Lamp Illuminated with DTC P0796 |
| Attention: | This Bulletin also applies to any of the models that may be Export vehicles. |
| Brand: | Model: | Model Year: | VIN: | Engine: | Transmission: | ||
|---|---|---|---|---|---|---|---|
| from | to | from | to | ||||
| Chevrolet | Silverado, Suburban, Tahoe | 2015 | 2016 | 6L80 (MYC) Automatic | |||
| GMC | Sierra, Yukon, Yukon XL | 2015 | 2016 | 6L80 (MYC) Automatic | |||
| Condition | Some customers may comment on the following conditions:
|
| Cause | This condition may be caused by a broken 4-5-6 Clutch (w/ Output Carrier Shaft) Hub Assembly. With this condition, the fluid pan assembly will be clean containing little or no debris and the fluid will also be clean with no distress. |
Correction

If the 4-5-6 Clutch (w/ Output Carrier Shaft) Hub Assembly (475) is found to be broken, replacement of the assembly is required.
If DTC P0796 has set and the 4-5-6 Clutch (w/ Output Carrier Shaft) Hub Assembly is found to be broken, the Control Solenoid (w/ Body and TCM) Valve Assembly (TEHCM) is not the cause and should not be replaced.
Service Procedure
Refer to Repair Instructions-Off Vehicle in SI.
Warranty Information
For vehicles repaired under warranty, use:
| Labor Operation | Description | Labor Time |
| 8468030 | 4-5-6 Clutch Hub Replacement | Use Published Labor Operation Time |
| Version | 1 |
| Modified |
SEOCONTENT-END
Bulletin No.: 16-NA-027
Date: Feb-2016
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- Backward compatible with previous Dexron automatic transmission fluids and can be used as a much-improved replacement for older vehicles/transmissions originally using previous Dexron fluids
- Improved performance over previous Dexron fluids in: friction durability, viscosity stability, aeration and foam control, and oxidation resistance
- Potential to enable improved fuel economy and longer transmission life
- Provides for extended drain intervals. Provides consistent shift performance, even in extreme conditions.
- For use in 95% of vehicles including most CVTs in operation with US registered light duty applications
- High performance conditioning agents prolong seal elasticity to prevent leaks
- Improved durability & transmission life with anti-wear technology to avoid costly repairs
- Enhanced high & low temp performance supports transmission fluid in all weather situations
- Full synthetic formula with advanced additives protects against transmission breakdown better than conventional fluids
- Formulated with full-synthetic base stocks and advanced additive technology to meet the challenging demands of automatic transmissions
- Enhanced anti-shudder protection for smooth shifting and maximum power transfer
- Developed with anti-wear technology to help improve transmission durability
- Engineered with a proprietary blend of base oils and advanced additives to provide better oil flow at low temperatures and greater film protection at higher temperatures
- Backward compatible with previous DEXRON automatic transmission fluids and can be used as a much-improved replacement for older vehicles/transmissions originally using previous DEXRON fluids
- Improved performance over previous DEXRON fluids in: friction durability, viscosity stability, aeration and foam control, and oxidation resistance
- Potential to enable improved fuel economy and longer transmission life
- Provides for extended drain intervals
- Formulated with full-synthetic base stocks and advanced additive technology to meet the challenging demands of automatic transmissions
- Enhanced anti-shudder protection for smooth shifting and maximum power transfer
- Developed with anti-wear technology to help improve transmission durability
- Engineered with a proprietary blend of base oils and advanced additives to provide better oil flow at low temperatures and greater film protection at higher temperatures
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