Control Valve Upper Body Assembly Cleaning and Inspection
WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2008 GMC Yukon XL, 2008 GMC Yukon, 2008 Chevrolet Tahoe, 2008 Chevrolet Suburban, and 2008 Cadillac Escalade EXT. However, it is still accessible from the selected car via links, so may be relevant.
| Callout | Component Name |
|---|---|
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CAUTION:
Valve springs can be tightly compressed. Use care when removing retainers and plugs. Personal injury could result.
NOTE:
Do not remove the exhaust backfill pressure relief retainer, spring, or ball valve (refer to arrow in Fig 1 illustration for location). The retainer is set to a precise depth. Replacement of this retainer could cause internal transmission damage. Preliminary Procedure: Clean and inspect all valve components, locating pins, and the valve body. The control valve upper body is replaceable only as an assembly. |
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| 1 | Clutch Boost Valve Train |
| 2 | 1-2-3-4 Clutch Regulator Valve Train |
| 3 | 3-5 Reverse Clutch Regulator Valve Train |
| 4 | Clutch Boost Valve Train |
| 5 | 2-6 Clutch Regulator Valve Train |
| 6 | Clutch Boost Valve Train |
| 7 | CBR1/4-5-6 Clutch Regulator Valve Train |
| 8 | Actuator Feed Limit Valve Train |
| 9 | Control Valve Body Locator Pin |
| 10 | Control Valve Body Locator Pin |
| 11 | Control Valve Body Locator Pin |