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Service bulletin SB-20937

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 id10030836
Published by NHTSA2009-12-09
Manufacturer's numberSB-20937
Manufacturer's date2009-08-01
NHTSA componentPOWER TRAIN:AUTOMATIC TRANSMISSION; POWER TRAIN

NHTSA's summary

FORD: MULTIPLE VEHICLES WITH A TORQ SHIFT TRANSMISSION INTERMITTENT CLUNK WHEN SHIFTING BETWEEN DRIVE, REVERSE AND PARK AND/OR DURING 2-3 UPSHIFT. MODELS F SUPER DUTY; E SERIES; EXCURSION; F53 MOTORHOME CHASSIS AND LOW CAB FORWARD. *PE

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, Automatic transmission

Vehicles listed
FORD E SERIES2003
FORD E-SERIES2003 to 2008
FORD EXCURSION2003, 2004, 2005
FORD F SUPER DUTY2003 to 2005
FORD F SUPER DUTY2008
FORD F-532007
FORD LCF2006
FORD LCF2008
FORD SUPER DUTY2006 to 2007

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

Other bulletins for the same vehicles and component
SSM 519092023-10-04. Service bulletin. When performing any transmission fluid changes or topoffs involving MERCON SP, MERCON LV has replaced all versions of MERCON SP and can be used going forward. Mixing MERCON LV and MERCON SP in the same transmission is acceptable. After 30-Jun-2023, MERCON SP ATF will no longer be manufactured and will only be available until inventory depletes.
ASI-445342014-10-01. Service bulletin. FORD: WHEN SHIFTING BETWEEN PARK, REVERSE AND/OR DURING 2-3 SHIFT, AN INTERMITTENT CLUNK OCCURS WITH A TORQSHIFT TRANSMISSION. MODEL 2003-2014 F-SUPER DUTY, E SERIES, EXCURSION, F-53 MOTORHOME CHASSIS, LOW CAB FORWARD. *PE
ASI-444042014-06-24. Service bulletin. FORD: ON SOME TRUCKS, THERE IS A NO CRANK SITUATION AND IF VOLTAGE ON TRANSMISSION RANGE SENSOR AT PIN 21, IS LESS THAN 5 VOLTS, DISCONNECT THE ENGINE COOLING FAN CLUTCH, ELECTRONICALLY, AND RECHECK VOLTAGE. MODEL 2003-2007 F SUPER DUTY, 2004-2010 E SERIES, 2003-2005 EXCURSION.
190902006-04-29. Service bulletin. EXHAUST PRESSURE SENSOR INPUT NO LONGER USED IF PCM IS REPROGRAMMED - SERVICE TIP. *TT
188222005-12-15. Service bulletin. TORQSHIFT TRANSMISSION - INTERMITTENT CLUNK WHEN SHIFTING FROM REVERSE GEAR OR DRIVE GEAR TO PARK. MULTIPLE VEHICLES. FORD OASIS. TO INCLUDE 2006 FORD F-53. *TT
051762005-12-15. Service bulletin. DIAGNOSTIC TROUBLE CODE P0488 AND/OR P1334 WITH NO DRIVEABILITY SYMPTOMS, HARSH SHIFT AND/OR TRANSMISSION ENGAGEMENTS. *TT
183762005-04-14. Service bulletin. A COLD WEATHER REVERSE ENGAGEMENT STALL. *TT
174372004-07-27. Service bulletin. WHITE/GRAY SMOKE AND VARIOUS DRIVEABILITY CONCERNS AFTER COLD START - TORQSHIFT HARSH DOWNSHIFT AND BUCK/JERK. *TT
03E032004-07-26. Service bulletin. EMISSIONS RECALL 03E03 - POWERTRAIN CONTROL MODULE AND FUEL INJECTOR CONTROL MODULE RE-CALIBRATION. *TT
173512004-07-23. Service bulletin. HARSH DISENGAGEMENT WHEN SHIFTING FROM REVERSE TO PARK. *TT