Need to have it scanned for codes
that is tranny codes
this is TSB on the subject
Some vehicles may exhibit a flashing Transmission Control Indicator Lamp (TCIL) accompanied by a Diagnostic Trouble Code (DTC) P0741 and in some cases P1728. This may be caused by the Output Shaft Speed Sensor (OSS) signal being improperly processed by the Powertrain Control Module (PCM).
Retrieve DTCs. Verify DTC P0741 and in some cases P1728. Diagnose and reprogram the PCM if necessary. Refer to the following Service Procedure for details.
1. Verify transmission fluid levels (and transfer case level if equipped).
2. Verify that DTC P0741 and in some cases P1728 are present. If other DTCs are present, repair them first. 3. Follow the Output State Control (OSC) procedures for both bench and drive modes as listed in the appropriate model year Workshop Manual (Section 307-1A) to verify transmission and solenoid operation. While in OSC drive mode, monitor OSS Sensor - OSS PID for proper signal as stated in the Workshop Manual. This will verify OSS operation. If the solenoids or transmission fail to perform properly, follow normal diagnosis and repair procedures.
4. Reprogram the PCM following the procedures found in the Powertrain Control/Emissions Diagnosis (PC/ED) Workshop Manual.
5. Verify the repair following the Transmission Drive Cycle test as written in the appropriate
NOTE: THE TRANSMISSION DRIVE CYCLE TEST MUST BE PERFORMED EXACTLY AS WRITTEN. DO NOT SHORT CUT OR MISS ANY STEPS OR THE PROCEDURE WILL NOT BE ABLE TO VALIDATE THE REPAIR.
Friday, December 5th, 2008 AT 6:08 PM