Quote:
Originally Posted by dme922
I talked to John at modern vintage and it sounds as if i need to get my ecm wiped clean and have the 05 or 06 5.3 tune. He was very helpful but very busy. Any suggestions on a good tuner?
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Not sure I would do that. If you have an '04 TAC module, then you need an '03-'04 tune to match it. Enabling the fans in your '04 tune is super easy, you just need to find someone with HP Tuners or something that can do it for you. Who did your initial tune? You can PM me if you don't want to say publicly, but just curious...