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 LOCATORCOMPONENT LOCATORDISASSEMBLED VIEWSUPPER CONTROL VALVE BODY ASSEMBLY
2019 GMC Sierra 1500 Limited Base, RWD, Gas
Upper Control Valve Body Assembly
2019 GMC Sierra 1500 Limited Base, RWD, GasSECTION Upper Control Valve Body Assembly
| Callout | Component Name |
|---|---|
| 313 | Control Valve Body Locating Pin |
| 321 | Control Valve Upper Body |
| 322 | Control Valve Body Locating Pin |
| 323 | Retainer |
| 324 | Actuator Feed Limit Valve Spring |
| 325 | Actuator Feed Limit Valve |
| 326 | Clutch Regulator Valve Spring |
| 327 | 1-Reverse Band and 4-5-6 Clutch Regulator Valve |
| 328 | Clutch Regulator Valve Bore Plug |
| 329 | Clutch Boost Valve |
| 330 | Clutch Boost Valve Spring |
| 334 | 2 - 6 Clutch Regulator Valve |
| 335 | 2 - 6 Clutch Regulator Valve Gain Valve |
| 336 | 3 - 5 Reverse Clutch Regulator Valve |
| 337 | 1 - 2 - 3 - 4 Clutch Regulator Valve |
| 338 | 1 - 2 - 3 - 4 Clutch Override Valve |
RENDER: 1.0x
NO RELATED
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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.