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Chevrolet
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2005
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Silverado 1500 HD, 4WD
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Repair and Diagnosis
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Transmission
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Automatic Trans
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Automatic Transmission - 4L80-E/4L85-E - Service, Diagnosis & Trouble Shooting
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Troubleshooting
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Transmission Overheats at WOT
Transmission Overheats at WOT
Transmission Overheats at WOT
Checks
Cause
Converter Limit Valve Bypass Orificed Cup Plug
The plug is blocked, therefore the converter limit valve is stuck closed.