For 1990-2009 cars

# VEHICLE MAINTAINS SPEED DURING THROTTLE DECELERATION ABOVE 5

---------------------------------------------------------------------- REVISION 09/10/93

THIS BULLETIN IS BEING REVISED TO CHANGE THE TITLE.

REVISION 10/27/93

#### THIS BULLETIN IS BEING REVISED TO CORRECT THE WARRANTY STATEMENT.

#### SUBJECT: SLOW DECELERATION WITH CLOSED THROTTLE ABOVE 5 MPH (READJUST AIR RATE)

#### MODELS: 1990-93 DEVILLES, FLEETWOODS AND SIXTY SPECIALS 1990-93 ELDORADOS 1990-93 SEVILLE (EQUIPPED WITH 4.5L OR 4.9L ENGINES)

SOME OWNERS MAY COMMENT ABOUT SLOW DECELERATION WITH CLOSED THROTTLE ABOVE 5 MPH. THIS MAY BE PARTICULARLY NOTICEABLE AFTER PERFORMING BULLETIN T-93-44 (CORPORATE BULLETIN 016540R) EVEN THOUGH ALL ENGINE ADJUSTMENTS HAVE BEEN SET ACCORDING TO PUBLISHED SERVICE INFORMATION.

TO CORRECT THIS CONDITION READJUST THE MINIMUM AIR RATE TO BETWEEN 400 AND 450 RPM, THE TP SENSOR SETTING TO .55 VOLTS, AND RESET TP SENSOR/IDLE LEARNS USING THE PROCEDURES LISTED IN THE APPROPRIATE SERVICE INFORMATION MANUAL.

FOR VEHICLES REPAIRED UNDER WARRANTY USE:

LABOR OPERATION: J6358 USE PUBLISHED LABOR TIME.

FIGURES: 0

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.

COPYRIGHT 1993 CADILLAC MOTOR CAR DIVISION, GENERAL MOTORS CORPORATION. ALL RIGHTS RESERVED.