RAM 3500 HD Truck 2WD L6-6.7L DSL Turbo VIN A (2007)
PROM - Programmable Read Only Memory: All Technical Service Bulletins
Engine Controls - A/T May Default To Neutral
NUMBER: 18-035-07
GROUP: Vehicle Performance
DATE: May 18, 2007
THE StarSCAN(R) FLASH FILES FOR THIS BULLETIN ARE AVAILABLE VIA THE INTERNET.
SUBJECT:
FLASH: 545RFE Transmission Defaults To Neutral
OVERVIEW:
This bulletin involves selectively erasing and reprogramming the Powertrain Control Module (PCM) with new software.
MODELS:
2007
(DR/DH/D1/DC)
Ram Truck (1500/2500/3500)
2007
(HB/HG)
Durango/Aspen
2007
(ND)
Dakota
NOTE:
This bulletin applies to vehicles equipped with a 545RFE transmission (sale code DGQ) built on or before March 26, 2007 (MDH 0326XX).
SYMPTOM/CONDITION:
The transmission may default into neutral gear if the transmission gear selector is moved into "reverse gear range under certain operating conditions.
The default into neutral gear is done to protect the transmission mechanical components from potential damage. New PCM software will monitor
transmission hydraulic pressure and allow reverse gear engagement, if the transmission is in "reverse gear range and the transmission hydraulic pressure
is sufficient to support reverse gear operation.
DIAGNOSIS:
Using a StarSCAN(R) with the appropriate Diagnostic Procedures available in TechCONNECT, verify all engine systems are functioning as designed. If
DTCs are present record them on the repair order and repair as necessary before proceeding further with this bulletin.
If the vehicle operator describes or experiences the Symptom/Condition, perform the Repair Procedure.
PARTS REQUIRED:
