A/T - THM 200C 2nd/3rd Gear Start/Erratic Shifts
TO: ALL BUICK DEALERS DCS NO. 84-17SUBJECT: 1984 THM 200C 2-3 T.V. SPRING BREAKING GROUP NO. 7-200 1-27-84
A FEW COMMENTS HAVE BEEN RECEIVED ABOUT THE 2-3 THROTTLE VALVE SPRING BREAKING IN THE CONTROL VALVE ASSEMBLY WHICH IS USED IN THE
1984 THM 200C "BH" MODEL TRANSMISSIONS.
THIS CONDITION CAN CAUSE A SECOND GEAR START, THIRD GEAR START, NO
THIRD GEAR OR ERRATIC SHIFTS. IF THIS CONDITION OCCURS, REMOVE THE CONTROL VALVE ASSEMBLY. REMOVE THE 2-3 VALVE PARTS, AS SHOWN IN THE 1984 SERVICE MANUAL, PAGE 200C-45, FIGURE 200C-179, ITEMS 5 THROUGH 8. THE 2-3 T.V. SPRING IS ITEMS #7. THROUGHLY CLEAN THE CONTROL VALVE ASSEMBLY. INSTALL THE NEW 2-3 T.V. SPRING AND OTHER PARTS AS PER THE SERVICE MANUAL INSTRUCTIONS. THE REPLACEMENT SPRING MAY BE OBTAINED THROUGH YOUR LOCAL ZONE OFFICE. PLEASE REPRODUCE THIS FOR YOUR NON-DCS DEALERS.
TECHNICAL SERVICE/1/30/84 J.D. MACK/MS 8:58 A.M.