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 MANUALSCHEVROLET2008CHEVY EXPRESS G3500, VAN PASSENGER EXTENDEDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 852 (AUTOMATIC TRANSMISSION - 2ML70 - COMPONENT LOCATOR)COMPONENT LOCATORDISASSEMBLED VIEWSCONTROL VALVE UPPER BODY ASSEMBLY
2008 Chevrolet Chevy Express G3500, Van Passenger Extended
Control Valve Upper Body Assembly
2008 Chevrolet Chevy Express G3500, Van Passenger ExtendedSECTION Control Valve Upper Body Assembly
WARNING: This page is about a different car, the 2011 GMC Yukon, 2011 Chevrolet Tahoe, and 2011 Cadillac Escalade. However, it is still accessible from the selected car via links, so may be relevant.
| Callout | Component Name |
|---|---|
| 320 | Valve Retaining Clip |
| 321 | Valve Retaining Plug |
| 322 | Auxiliary Line Boost Valve |
| 323 | Auxiliary Line Boost Valve Spring |
| 324 | 1-3 Clutch Regulator Valve |
| 325 | 1-3 Clutch Regulator Valve Spring |
| 326 | Hybrid Direct 2-3-4 Clutch Regulator Valve |
| 327 | Hybrid Direct 2-3-4 Clutch Regulator Valve Spring |
| 328 | Shift Solenoid Valve - Mode A |
| 329 | Hybrid A/Trans Shift Solenoid Spring |
| 330 | Control Valve Body Locating Pin |
| 331 | Hybrid A/Trans Shift Solenoid Spring |
| 332 | Shift Solenoid Valve - Mode B |
| 333 | Actuator Feed Limit Valve Spring |
| 334 | Actuator Feed Limit Valve |
| 335 | Hybrid Low, 1-2 Clutch Regulator Valve Spring |
| 336 | Hybrid Low, 1-2 Clutch Regulator Valve |
| 337 | Hybrid Low, 1-2 Clutch Boost Valve Assembly |
| 338 | Hybrid Low, 1-2 Clutch Boost Valve Spring |
| 339 | Clutch Piston Exhaust Blowoff Ball Valve |
| 340 | Clutch Piston Exhaust Blowoff Ball Valve Spring |
| 341 | Clutch Piston Exhaust Blowoff Ball Valve Plug |
| 342 | Control Valve Body Locator Pin |
| 343 | Control Valve Upper Body Assembly |
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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.