BLOWER MOTOR FAILURE (CHECK SPARK PLUG WIRE ROUTING). Cadillac DeVille 1994

SUBJECT: HEATER BLOWER MOTOR FAILURE AFTER SERVICING RIGHT HAND (REAR) BANK SPARK PLUG WIRES, SPARK PLUGS AND/OR IGNITION CONTROL MODULE (CHECK SPARK PLUG WIRE ROUTING)

MODELS: 1994 CADILLAC ELDORADO, SEVILLE AND CONCOURS WITH 4.6L NORTHSTAR ENGINE (VINS Y, 9 - RPOS LD8, L37)

THIS BULLETIN IS BEING REVISED TO CHANGE THE LABOR OPERATION NUMBER. PLEASE DISCARD BULLETIN 471101.

CONDITION:

SOME OWNERS MAY EXPERIENCE A HEATER BLOWER MOTOR FAILURE AFTER SERVICE TO THE IGNITION CONTROL MODULE, REAR (RIGHT) BANK SPARK PLUG AND/OR REAR (RIGHT) BANK SPARK PLUG WIRES HAVE BEEN PERFORMED.

CAUSE:

IF THE SPARK PLUG WIRES ARE ROUTED INCORRECTLY, LAYING NEAR OR CONTACTING THE BLOWER MOTOR HOUSING, VOLTAGE DISCHARGES FROM THE RIGHT (REAR) BANK SPARK PLUG WIRES MAY AFFECT BLOWER MOTOR OPERATION AND/OR CAUSE THE BLOWER MOTOR TO FAIL.

CORRECTION:

IF SERVICING AN ENGINE AND REAR BANK SPARK PLUG WIRE REMOVAL IS NECESSARY, EXERCISE CAUTION WHEN INSTALLING SPARK PLUG WIRES. SPARK PLUG WIRES MUST BE ROUTED AWAY FROM THE BLOWER MOTOR MOUNTED ON THE COWL PANEL. REFER TO CORPORATE BULLETIN NO. 316005 (CADILLAC BULLETIN T-93-101, GM OF CANADA 93-6-118) FOR PROPER SPARK PLUG WIRE ROUTING ARTWORK AND INFORMATION.

WARRANTY INFORMATION:

FOR VEHICLES REPAIRED UNDER WARRANTY, USE: LABOR OPERATION NUMBER: T6723 LABOR TIME: .5 HOUR

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.