For 1990-2009 cars

# INFORMATION: FUEL GAUGE RESP. SLOWLY AFTER FUELING

#### SUBJECT: INFORMATION - FUEL GAUGE RESPONDS SLOWLY AFTER FUELING

#### MODELS: 1996-97 PASSENGER CARS AND TRUCKS (EXCEPT GEO)

SOME OWNERS MAY COMMENT THAT THE FUEL GAGE READING RESPONDS VERY SLOWLY AFTER FUELING THE VEHICLE. THE NEEDLE MAY TAKE UP TO 8 MINUTES BEFORE REACHING THE "FULL" MARK.

MOST 1997 VEHICLES, AND SOME 1996, CONTAIN A DAMPING FUNCTION IN THE FUEL GAUGE CIRCUIT. THIS ALLOWS THE GAUGE TO RESPOND SLOWLY TO CHANGES IN TANK LEVEL, PREVENTING THE LARGE NEEDLE SWINGS WHEN THE VEHICLE IS DRIVEN AROUND CORNERS OR DURING ACCELERATION/DECELERATION. THIS IS CALLED AN "ANTI-SLOSH" FUNCTION.

THE ANTI-SLOSH FUNCTION DOES NOT OPERATE IMMEDIATELY AFTER THE IGNITION IS FIRST TURNED ON. THEREFORE, THE ABOVE CONDITION WILL ONLY OCCUR IF THE IGNITION IS LEFT ON DURING FUELING. THE OWNER CAN GET THE CORRECT READING IMMEDIATELY BY TURNING THE IGNITION KEY OFF, THEN ON.

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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.

COPYRIGHT 1997 GENERAL MOTORS CORPORATION. ALL RIGHTS RESERVED.