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Service bulletins for the 1998 Mercury Grand Marquis

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

164 on file from NHTSA, as of 2026-10-19.

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By component

By trouble code

Only bulletins with component: Automatic transmission are shown. Show all

Bulletins, newest first
0421072005-04-28. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). GENERAL (PCM) POWER TRAIN CONTROL MODULE PROGRAMMING PROCEDURES. *TT
042172005-04-15. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). GENERAL POWER TRAIN CONTROL MODULE (PCM) PROGRAMMING PROCEDURES. *TT
178102004-08-05. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. TRANSMISSION FAILURE WHERE THERE IS A LARGE AMOUNT OF METAL OR DEBRIS IN THE PAN. *TT
032612004-07-26. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. NEW SERVICE PART - NUMBER 5 NEEDLE BEARING AND RACE KIT - 4R70W TRANSMISSION - SERVICE TIP. *TT
021362002-11-04. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:PARK/NEUTRAL START INTERLOCK SWITCH. ON SOME VEHICLES, THE BRAKE SHIFT INTERLOCK MAY BE INOPERATIVE, NOW ALLOWING THE OPERATOR TO MOVE THE SHIFT LEVER FROM THE PARK POSITION. STOP LAMP OPERATION MAY ALSO BE AFFECTED. *TT
011812001-11-30. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:PARK/NEUTRAL START INTERLOCK SWITCH. BRAKE SHIFT INTERLOCK.*JB
00E112001-05-16. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). SERVICE ACTION 00E11, SUPPLEMENT #1 - UPDATE INFORMATION REGARDING ON-BOARD DIAGNOSTIC SYSTEM UPGRADE. *TT
0023102001-03-05. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:COOLING UNIT AND LINES. SUBJECT REGARDING CONTAMINATION FROM PRIOR TRANSMISSION CONCERNS OR EXCESS WEAR MAY BE TRAPPED IN THE TRANSMISSION FLUID COOLING SYSTEM. *TT
122982001-01-18. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. SOME VEHICLES EQUIPPED WITH 4R70W TRANSMISSIONS MAY EXHIBIT DELAYED OR NO 2-3 UPSHIFT, PRIMARILY WHEN THE TRANSMISSION IS COLD. TRANSMISSION CONTROL INDICATOR LIGHT (TCIL) MAY ALSO FLASH WITH DIAGNOSTIC TROUBLE CODE P0782. *TT
991522001-01-05. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. INFORMATION ON THE NEW FLUSH AND FILL TOOL AVAILABLE THROUGH ROTUNDA. *TT
127042000-11-09. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). SUBJECT REGARDING ALL VEHICLES REQUIRES A PARAMETER RESET TO BE PERFORMED ON THE PASSIVE ANTI-THEFT SYSTEM MODULE (PATS / VIC / HEC) WHEN THE POWERTRAIN CONTROL MODULE (PCM) IS REPLACED. *TT
114822000-07-10. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. FOR CERTAIN MODEL VEHICLES, THE 4R70W TRANSMISSION SOLENOID MOLDED LEADFRAME MUST BE REPLACED WHEN REMOVED. *TT
50782000-06-19. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. SOME VEHICLES EQUIPPED WITH A 4R70W TRANSMISSIONS MAY EXPERIENCE HARSH REVERSE ENGAGEMENT. *TT
98113511999-09-24. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. SOME VEHICLES WITH 4R70W TRANSMISSION MAY HAVE A HARSH REVERSE ENGAGEMENT. *TT
99961999-08-20. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. EXPERIENCING A DELAYED OR NO 2-3 UPSHIFT, PRIMARILY WHEN THE TRANSMISSION IS COLD ON VEHICLES WITH FORD QALITY REMANUFACTURED (FQR) 4R70W TRANSMISSION EXCHANGE UNITS WITH JULIAN BUILD BETWEEN 062-97 AND 040-99. *TT
9823121999-03-04. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. ISSUES REGAREDING DIAGNOSTIC TROUBLE CODES ( DTCS ) P0705, P0708, P1704, AND / OR P1705 MAY BE STORED IN MEMORY. *YC
984121998-07-16. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. THE 4R70W TRANSMISSION INSTALLED IN SOME VEHICLES WILL HAVE AN ORANGE
98881998-07-10. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. INFORMATION ON A NEW TRANSMISSION FLUID USAGE CHART. *YC
970902971831998-03-30. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). EXPERIENCING DIFFICULTIES WITH THE MALFUNCTION INDICATOR LAMP (MIL). *YC

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.