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Service bulletin 6603

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id610704
Published by NHTSA2000-05-11
Manufacturer's number6603
Manufacturer's date1999-07-01
NHTSA componentPOWER TRAIN:DRIVELINE

NHTSA's summary

SOME VEHICLES MAY EXHIBIT AN AUDIBLE PINGING OR CREAKING NOISE THAT MAY BE HEARD FROM THE DRIVELINE WHEN ENGINE TORQUE IS INITIALLY APPLIED TO THE DRIVELINE. *TT

The document

No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number.

Components

Transmission and driveline

Vehicles listed
FORD BRONCO II1990
FORD EXPLORER1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999
FORD RANGER1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Recalls for the same vehicles and component
01V0620002001-02-26. POWER TRAIN:DRIVELINE:DRIVESHAFT
20010032001-01-12. Powertrain
00V3950002000-11-28. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM)
19991431999-07-30. Powertrain
99V2040001999-07-28. POWER TRAIN:AUTOMATIC TRANSMISSION
19911491991-11-06. Powertrain
91V1890001991-11-04. POWER TRAIN:AUTOMATIC TRANSMISSION

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
0305082005-12-07. Service bulletin. FRONT AXLE LEAKS FLUID FROM VENT TUBE - VEHICLES EQUIPPED WITH 4X4 OR AWD. *TT
0421072005-04-28. Service bulletin. GENERAL (PCM) POWER TRAIN CONTROL MODULE PROGRAMMING PROCEDURES. *TT
042372005-04-18. Service bulletin. DRIVESHAFT THUMP CLUNK ON LIGHT ACCELERATION FROM STOP OR WHEN BRAKING AND COMING TO A STOP. *EH
042172005-04-15. Service bulletin. GENERAL POWER TRAIN CONTROL MODULE (PCM) PROGRAMMING PROCEDURES. *TT
021922004-08-09. Service bulletin. DRIVESHAFT-THUMP/CLUNK HEARD ON LIGHT ACCELERATION FROM A STOP OR WHEN BRAKING AND COMING TO A STOP.
030482004-07-26. Service bulletin. THUMP/CLUNK ON LIGHT ACCELERATION FROM STOP OR WHEN BRAKING AND COMING TO A STOP ON CERTAIN 4X4 SUPER CAB EQUIPPED WITH AUTOMATIC TRANSMISSION AND STEEL DRIVESHAFT. *TT
032612004-07-26. Service bulletin. NEW SERVICE PART - NUMBER 5 NEEDLE BEARING AND RACE KIT - 4R70W TRANSMISSION - SERVICE TIP. *TT
169352003-11-04. Service bulletin. AN UNCOMMANDED SHIFT TO 4X4 LOW. *TT
031482003-10-29. Service bulletin. NEW TRANSMISSION COOLER FLUSHER - SERVICE TIPS. 2003 ESCORT AND SUPER DUTY F SERIES INCLUDED. *TT
0303022003-09-04. Service bulletin. DRIVESHAFT - THUMP/CLUNK HEARD ON LIGHT ACCELERATION FROM A STOP OR WHEN BRAKING AND COMING TO A STOP. *TT