Originally Posted by rac-jeep
...for anyone who would like the information about the Flash performed on my Jeep yesterday.
Just got off the phone with Brook, the Service Advisor at my local dealer. He said that the Flash is referenced by the TSB Number(s). This one has two TSB Numbers which reference the same Flash.
I smiled the entire commute to work this morning. Smooth and even performance through all gears.
NUMBER: 21-018-08 REV. A
DATE: September 17, 2008
Flash: Diagnostic Trouble Code DTC P0740 Or P1798 And Automatic Transmission Shift Improvements 1-2 Or 2-3 Cold Shift Improvements
2007 - 2008 (JK) Wrangler
NOTE: This Bulletin applies to LX/LE models equipped with a 42 RLE transmission (Sales Code DGV) built before April 28, 2008 (0428XXMDH). This Bulletin applies to all 2008 KA/KK/HB/DR and 2007 - 2008 **JK**/ND vehicles equipped with a 42 RLE transmission (Sales Code DGV).
This bulletin involves selectively erasing and reprogramming the Powertrain Control Module (PCM).
The software contains the following improvements:
· 2008 LX 3.5L 1-2 Shift Improvements
· Cold (Transmission Fluid below 80° F) 2-3 Shift Improvements
Some customers may experience one or more of the concerns as follows:
· A MIL illumination for P0740 - Torque Converter Clutch Circuit/Open
· A DTC set active or stored for P1798 - Transmission Fluid Deteriorated
Do not confuse this condition for an Oil Change Monitor alert due to the Oil Change Monitor not being reset following an oil change.
That flash most likely explains your JK waking up.