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TSB#: 21-014-05

Date: Aug 23, 2005

Subject: FLASH: Clicking Sound From Rear of Vehicle After Accelerating From A Stop

Models: 2005-2006 LX (300 and Magnum)

Overview: This bulletin involves selectively erasing and reprogramming the Powertrain Control Module (PCM) with new software.

NOTE: This bulletin applies to 2006 vehicles equipped with a 3.5L engine (sales code EGG) and a 42RLE transmission (sales code DG6) built on or before July 29, 2005 and 2005 vehicles equipped with a 2.7L or 3.5L engine (sales code EER or EGG) and a 42RLE transmission (sales code DG6).

Symptom/Condition: The new PCM software corrects a customer complaint of a click sound, coming from the rear of the vehicle, immediately after accelerating the vehicle from a stop. This sound may be verified by driving the vehicle and allowing the transmission to shift into 4th gear then allowing the vehicle to coastdown to a stop, without tipping into the accelerator pedal before the complete stop. The sound will be heard immediately after launching the vehicle and will seem to be coming from the rear of the vehicle.

Diagnosis: Using a Scan Tool (StarSCAN) with TechCONNECT and the appropriate Diagnostic Procedures, verify all engine and transmission systems are functioning as designed. If DTCs are present, record them on the repair order and repair as necessary before proceeding further with this service bulletin.

If the vehicle operator experiences the Symptom/Condition perform the Repair Procedure.
 
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