1981 Corvette: Service Bulletin: Loss of Front Pump Prime 350C Transmissions

Subject: LOSS OF FRONT PUMP PRIME 350C TRANSMISSIONS
Model and Year: Early 1981 Corvettes
Source: Chevrolet Dealer Service Bulletin
Bulletin Number: 81-T-38

SOME 1981 CORVETTES AND CAMAROS WITH 350C (MX3) AUTOMATIC TRANSMISSIONS MAY EXPERIENCE A MOMENTARY DELAY IN DRIVE RESULTING FROM LOSS OF FRONT PUMP PRIME. SINCE THIS DELAY CAN ALSO BE CAUSED BY A LOW FLUID LEVEL, THE OIL FILL MUST BE VERIFIED BEFORE ATTEMPTING ANY CORRECTIVE ACTION. IF THE TRANSMISSION HAS SUFFICIENT OIL AND THE CONDITION PERSISTS, PICK UP SCREEN P/N 6258504 SHOULD BE INSTALLED. THIS PART IS CURRENTLY IN SERVICE AS IT WAS USED IN 1980 TRANSMISSIONS. THE CHANGE WAS EFFECTIVE IN PRODUCTION ON 2-17-81 WITH TRANSMISSION DATE STAMP 157.

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