Question I own a 2002 GMC YUKON DENALI XL. I BOUGHT IT BRAND NEW. IT HAS ONLY 36,000 ON IT. I 'M NOW ON MY 7TH TRANSMISSION, YES I SAID SEVEN. THE PROBLEM STARTED ABOUT 2 YEARS AGO, THE TRUCK HAS A SUPERCHARGER ON IT AND WE HAD TO DO A CUSTOM ECM PROGRAM, BUT THE PROBLEM STARTED BEFORE ALL THIS, THE TRANSMISSIONS KEEP BLOWING, AND ITS NOT BECAUSE OF THE POWER,I DRIVE IT LIKE A GRANNY AS OF NOW AND SINCE THE 3RD TRANS, BUT WE ARE ALSO ON MY 3RD CORE, THE GUY WHO BUILT THE UNIT THINKS "ITS GOTTA BE IN THE COMPUTER", BUT WHY WOULD 1 LAST SIX MONTHS AND MOST OF THE REST ONLY A WEEK? BTW, I'VE BEEN AN AUTO TECH FOR 22 YEARS AND OWN MY OWN SHOP, BUT WE ARE STUMPED AND I WONDER IF ANYONE ELSE HAS A PROBLEM LIKE I DO?? PLEASE RESPOND.
AnswerHi Rick
does the bulider say whats failing? Is it the same part(s) failing everytime? When it fails, does it do the same thing(s) everytime?
Was the Program or did the program come with the S/C?
Would it be possible for you to download your program in the PCM now to a scanner, and up load a stock program for testing purposes? Or maybe get a boneyard PCM and progrom it for your VIN and test?
I HAVE heard of some programs causing some tranny problems, however I have never heard of them actually toasting a tranny. Codes set, yes. Missed or improper shift points, yes. but never a fried tranny.
Please follow post back.
Pawl
