INFO ON TRANSAXLE RANGE SWITCH INPUT. Buick Riviera 1998

THIS IS A MONTHLY SERVICE NEWSLETTER ARTICLE. THIS IS NOT INTENDED TO BE A PUBLISHED BULLETIN.

SUBJECT: INFORMATION ON TRANSAXLE RANGE SWITCH INPUT OR DTC P0705

MODELS: 1997-98 BUICK PARK AVENUE/ULTRA 1998 BUICK LESABRE 1997-98 BUICK RIVIERA 1998 BUICK REGAL WITH 4T65E

IF A VEHICLE DISPLAYING DTC P0705 IS BEING DIAGNOSED, PLEASE BE AWARE OF THE FOLLOWING:

A CONCERN WITH THE INFORMATION SUPPLIED REGARDING THE TRANSAXLE RANGE SWITCH VALID INPUT COMBINATIONS ON THE TECH 2 FOR 1998 MODEL YEAR VEHICLES WITH 4T65E TRANSMISSIONS HAS BEEN IDENTIFIED. THE CONCERN WITH THE SOFTWARE IS THAT THE HIGH - LOW READINGS FOR REVERSE, NEUTRAL, DRIVE2 AND DRIVE1 ARE REVERSED FROM WHAT THE CHART SHOWS. THE CHART IN SECTION 6-ENGINE CONTROLS, IS CORRECT.

THE TECH 2 SOFTWARE IS INCORRECT AND WILL BE CORRECTED WITH CD-01 RELEASE. ALL OTHER GEAR SELECTOR POSITIONS (PARK, OVERDRIVE AND D3) ARE CORRECT.

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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.