INFO. ON FLUSHING A VALVE BODY PRIOR TO REPLACEMENT. Buick Park Avenue 1998

THIS IS A MONTHLY SERVICE NEWSLETTER ARTICLE. THIS BULLETIN IS NOT INTENDED FOR PUBLICATION.

SUBJECT: INFORMATION ON FLUSHING A VALVE BODY PRIOR TO REPLACEMENT

MODELS: 1997-1998 BUICK VEHICLES WITH A 4T65E TRANSMISSION

THE TECH2 WILL ABORT FULL LINE PRESSURE WHEN ANY GEAR RANGE IS SELECTED. TO OBTAIN FULL LINE PRESSURE TO FLUSH SEDIMENT FROM THE VALVE BODY, DISCONNECT THE PRESSURE CONTROL SOLENOID CIRCUIT WIRE FROM THE TRANSAXLE CONNECTOR. THEN CYCLE THE AFFECTED SOLENOID(S) ON AND OFF WITH THE TECH2 TO FLUSH THE HYDRAULIC CIRCUIT(S).

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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.