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 MANUALSCHEVROLET2008UPLANDER V6-3.9LREPAIR AND DIAGNOSISTRANSMISSION AND DRIVETRAINAUTOMATIC TRANSMISSION/TRANSAXLETESTING AND INSPECTIONCOMPONENT TESTS AND GENERAL DIAGNOSTICSCLUTCH PLATE DIAGNOSIS
2008 Chevrolet Uplander V6-3.9L
Clutch Plate Diagnosis
2008 Chevrolet Uplander V6-3.9LSECTION Clutch Plate Diagnosis
Clutch Plate Diagnosis
Composition Plates
Dry the plates and inspect the plates for the following conditions:
* Pitting
* Flaking
* Delamination-splitting or separation of bonded clutch material
* Wear
* Glazing
* Cracking
* Charring
* Chips or metal particles embedded in the lining
Replace a composition plate which shows any of these conditions.
Steel Plates
Wipe the plates dry and check the plates for heat discoloration. If the surfaces are smooth, even if color smear is indicated, you can reuse the plate. If the plate is discolored with heat spots or if the surface is scuffed, replace the plate.
Causes of Burned Clutch Plates
The following conditions can result in a burned clutch plate:
* Incorrect usage of clutch or apply plates
* Engine coolant or water in the transmission fluid
* A cracked clutch piston
* Damaged or missing seals
* Low line pressure
* Valve body conditions
- The valve body face is not flat.
- Porosity is between channels.
- The valve bushing clips are improperly installed.
- The checkballs are misplaced.
* The Teflon(R) seal rings are worn or damaged.
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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.