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 MANUALSCHEVROLET2019EXPRESS 2500 BASE, VAN CARGO EXTENDED, 6.0L ENG VIN GREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 80 (AUTOMATIC TRANSMISSION - 8L90 (M5U) - COMPONENT LOCATOR)COMPONENT LOCATORDISASSEMBLED VIEWSCONTROL VALVE UPPER BODY ASSEMBLY
2019 Chevrolet Express 2500 Base, Van Cargo Extended, 6.0L Eng VIN G
Control Valve Upper Body Assembly
2019 Chevrolet Express 2500 Base, Van Cargo Extended, 6.0L Eng VIN GSECTION Control Valve Upper Body Assembly
WARNING: This page is about a different car, the 2018 GMC Savana 3500, 2018 GMC Savana 2500, 2018 Chevrolet Express 3500, and 2018 Chevrolet Express 2500. However, it is still accessible from the selected car via links, so may be relevant.
| Callout | Component Name |
|---|---|
| 325 | Transmission Fluid Passage Plug |
| 326 | Valve Spring Retainer |
| 327 | Pressure Regulator Valve Bore Bushing |
| 328 | Pressure Regulator Shuttle Valve |
| 329 | Pressure Regulator Valve |
| 330 | Pressure Regulator Valve Spring |
| 331 | Pressure Regulator Valve Spring Retainer |
| 332 | Pressure Relief Ball Valve Spring |
| 333 | Pressure Relief Ball Valve |
| 334 | Feed Limit Valve Spring |
| 335 | Actuator Feed Limit Valve |
| 336 | Default Override Valve Bore Plug Retainer |
| 337 | Default Override Valve Bore Plug |
| 338 | Default Override Valve Spring |
| 339 | Default Override Valve |
| 340 | Control Valve Center Body Hole Plug |
| 341 | Clutch Piston Exhaust Blowoff Ball Valve |
| 342 | Clutch Piston Exhaust Blowoff Ball Valve Spring |
| 343 | Clutch Piston Exhaust Blowoff Ball Valve Retainer |
| 346 | Torque Converter Clutch Valve |
| 347 | Torque Converter Clutch Valve Spring |
| 348 | Lube Regulator Valve |
| 349 | Lube Regulator Valve Spring |
| 350 | Lube Regulator Valve Bore Plug |
| 351 | Torque Converter Clutch Control Valve |
| 352 | Torque Converter Clutch Control Valve Spring |
| 353 | Torque Converter Clutch Control Valve Bore Plug |
| 354 | Control Valve Upper Body |
| 355 | Line Pressure Bore Plug - Model Dependent |
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.