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FATCAT 03-08-2004, 07:57 PM I AM ABOUT TO INSTALL THE NSBU SWITCH, IN THE DIRECTIONS ON LINE #12 IT SAYS, "IMPORTANT: BEFORE STARTING VEHICLE, CLEAR DIAGNOSTIC TROUBLE CODES (DTC)". DOES ANYONE KNOW WHAT WOULD HAPPEN IF I DID START IT, BECAUSE I DON'T HAVE A CODE READER THINGAMABOB?http://www.dieselplace.com/forum/smileys/Confused.gif duramaxdiesel 03-08-2004, 09:13 PM Don't worry about it. I still had the codes when I installed my new one. You can clear the codes later. Nick Mackin 03-08-2004, 09:18 PM It would only be the case if you were in "limp" mode .... Don't sweat it ... Mac FATCAT 03-08-2004, 09:19 PM HEY NICK, WHAT DO THE CODES MEAN? IS IT THE SERVICE ENGINE SOON LIGHT? BECAUSE MINE IS ON.. FATCAT 03-08-2004, 10:01 PM THANKS GUYS FOR THE HELP.. EVERYTHING IS BACK TO NORMAL, I TURNED THE IGNITION ON AND OFF A COUPLE OF TIMES AND THE SERVICE ENGINE SOON LIGHT CAME OFF. I HOOKED THE JUICE BACK UP AND I AM HAPPY AGAIN. I DROVE THE TRUCK FOR 1 DAY WITHOUT THE JUICE AND IT SUCKED! I TOOK THE JUICE OUT BECAUSE I THOUGHT THAT IT WAS PART OF THE PROBLEM I WAS HAVING WITH THE TRANSMISSION. THANKS AGAINhttp://www.dieselplace.com/forum/smileys/Big Smile.gif Mackin 03-08-2004, 10:06 PM The SES (service engine soon ) light illuminates to tell you DTC (diagnostic trouble codes ) are stored in the ECM (engine control module)and or TCM (transmission control module) ... Hope your problem is fixed !!!! Mac http://www.dieselplace.com/forum/smileys/Approve.gif | ||