Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSGMC2019SIERRA 1500 LIMITED BASE, RWD, GASREPAIR AND DIAGNOSISTRANSMISSIONAUTOMATIC TRANSAUTOMATIC TRANSMISSION - 6L80 (MYC) OR 6L90 (MYD) - COMPONENT LOCATOR
2019 GMC Sierra 1500 Limited Base, RWD, Gas
Automatic Transmission - 6L80 (MYC) Or 6L90 (MYD) - Component Locator
2019 GMC Sierra 1500 Limited Base, RWD, GasSECTION Automatic Transmission - 6L80 (MYC) Or 6L90 (MYD) - Component Locator
- Component Locator
- Disassembled Views
- Case and Associated Parts
- Clutch Assemblies and Associated Parts
- Torque Converter (w/Fluid Pump) Housing Assembly
- Control (with Body and Valve) Valve Assembly
- Upper Control Valve Body Assembly
- Lower Control Valve Body Assembly
- 1 - 2 - 3 - 4 and 3 - 5 Reverse Clutch Assembly
- 4 - 5 - 6 (w/Turbine Shaft) Clutch Assembly
- 2 - 6 Clutch Assembly
- Low and Reverse Clutch Assembly
- 4 - 5 - 6 Clutch Hub Assembly
- Output Carrier Assembly
- Output Shaft Assembly
- Park System Components
- Component Location (6L50/80/90)
- Bushing, Bearing, and Washer Locations
- Seal Locations
- Ball Check Valve Locations
- Disassembled Views
RENDER: 1.0x
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.