For 1990-2009 cars

# GRADUAL LOSS OF POWER / LOW VOLTAGE READING

#### SUBJECT: GRADUAL LOSS OF POWER/LOW VOLTAGE READING (REPLACE FUSIBLE LINK WITH LARGER GAUGE)

#### MODELS: 1993-95 CHEVROLET LUMINA APV/MINIVAN 1993-95 OLDSMOBILE SILHOUETTE 1993-95 PONTIAC TRANS SPORT WITH 3.8L ENGINE (VIN L - RPO L27)

#### CONDITION:

THE CUSTOMER MAY COMMENT THAT THE VOLTAGE READING ON THE GAUGE (IF EQUIPPED) IS LOWER THAN NORMAL. IF THE LOW VOLTAGE IS NOT NOTICED FOR SOME TIME, THE COMMENT MAY BECOME POOR DRIVEABILITY OR STALLING. THIS WILL EVENTUALLY LEAD TO A RUN-DOWN BATTERY AND COMPLETE LOSS OF POWER. THE GENERATOR WARNING LIGHT OR "CHECK GAUGES" WARNING LIGHT **WILL NOT** BE ON.

#### CAUSE:

THE FUSIBLE LINK FROM THE GENERATOR TO THE STARTER SOLENOID MAY BE BLOWN. THIS CAUSES THE VEHICLE TO RUN ON BATTERY POWER ONLY, WHICH WILL LEAD TO THE ABOVE CONDITIONS.

THE PRESENT WIRING DESIGN USES A 2MM (14 GAUGE) FUSIBLE LINK, WHICH MAY BE INADEQUATE UNDER CERTAIN CONDITIONS. THIS IS MORE LIKELY TO OCCUR WITH THE 140 AMP GENERATOR, WITH THE BATTERY IN A LOW STATE OF CHARGE, OR WITH THE ADDED LOADS OF CUSTOMER INSTALLED ACCESSORIES.

A LARGER FUSIBLE LINK WAS INSTALLED IN PRODUCTION AFTER APPROXIMATELY OCTOBER 1, 1994. THE WIRING IS SHOWN ON PAGE 8A-10-2 OF THE 1995 U VAN SERVICE MANUAL.

#### CORRECTION:

REPLACE THE FUSIBLE LINK WITH 3MM (12 GAUGE) FUSIBLE LINK WIRE. THIS MATERIAL IS AVAILABLE FROM GMSPO IN 50 FOOT ROLLS, P/N 6293923.

#### PART INFORMATION:

PARTS ARE CURRENTLY AVAILABLE FROM GMSPO.

#### WARRANTY INFORMATION:

FOR VEHICLES REPAIRED UNDER WARRANTY, USE:

LABOR OPERATION NUMBER: N6270 USE PUBLISHED LABOR OPERATION 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 1994 GENERAL MOTORS CORPORATION. ALL RIGHTS RESERVED.