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Home >> Chevrolet >> 2005 >> Chevy Express H1500, Van Passenger >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 4 (Automatic Transmission - 4L80-E/4L85-E - Service, Diagnosis & Trouble Shooting) >> Troubleshooting >> Harsh Shift 4 to 3

Harsh Shift 4 to 3

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Harsh Shift 4 to 3

Checks Cause
Retainer Ring (533) Not seated
Spring Assembly (532) Not acting
Bolt (26) The oil feed hole is plugged.
Cup Plug (530) Plugged
Direct Lube Exhaust Blocked