THM 325 3-2 FLARE- DOWNSHIFT REVISED VALVE BODY/CASE SPACER

CERTAIN 1981 AND 1982 ELDORADO AND SEVILLE MODELS CAN EXHIBIT AN ENGINE FLARE (OVERREVVING) CONDITION DURING A PART THROTTLE OR DETENT 3-2 TRANSMISSION DOWNSHIFT. A "PART-THROTTLE" MANUEVER REPRESENTS LESS THAN 3/4 THROTTLE (60F THROTTLE ANGLE VIA DIAGNOSTICS) WHILE A "DETENT" DOWNSHIFT IS AVAILABLE OVER 3/4 THROTTLE. THE PART THROTTLE ENGINE FLARE IS DUE TO INCORRECT TIMING FOR THE APPLICATION OF THE INTERMEDIATE BAND (2ND) CAUSING THE ENGINE SPEED INCREASE AFTER RELEASE OF DIRECT CLUTCH (3RD). THE ENGINE FLARE ON A DETENT MANUEVER IS DUE TO THE TRANSMISSION NOT COMPLETING THE SHIFT INTO 1ST GEAR AND THEN GOING TO 2ND GEAR (3-1-2). BOTH CONDITIONS ARE MOST NOTICEABLE IN THE VEHICLE SPEED RANGE OF 25-30 MPH AFTER THE TRANSMISSION HAS REACHED NORMAL OPERATING TEMPERATURE (IN 10-15 MINUTES). THIS CONDITION CAN BE DIAGNOSED IN BOTH DRIVE AND MANUAL THIRD SELECTOR POSITIONS. THIS BULLETIN OUTLINES SPECIFIC SERVICE PROCEDURES REQUIRED TO CORRECT THIS CONDITION ON EACH POWERTRAIN APPLICATION. DEPENDING ON MODEL YEAR AND ENGINE/TRANSMISSION COMBINATION, PROCEED AS FOLLOWS: YEAR 1981 ENGINE 4.1L V-6 TRANSMISSION THM 325 MODEL AG SECTION OF BULLETIN I YEAR 1982 ENGINE HT4100 TRANSMISSION THM 325-4L MODEL AJ SECTION OF BULLETIN II YEAR 1982 ENGINE 5.7L DIESEL TRANSMISSION THM 325-4L MODEL AL SECTION OF BULLETIN II YEAR 1982 ENGINE 4.1L V-6 TRANSMISSION THM 325-4L MODEL AM SECTION OF BULLETIN III ** ADDITIONAL INFORMATION IN BULLETIN **

General Motors bulletins are intended for use by professional technicians, not a "do-it-yourselfer". They are written to inform those technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions and know-how to do a job properly and safely. If a condition is described, do not assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See a General Motors dealer servicing your brand of General Motors vehicle for information on whether your vehicle may benefit from the information.