Okay, I made a bonehead move... I put a cam in a CTS V for a friend and had to use a 3 bolt cam gear. I got a gear for a 2000 Silverado and after starting the car it set a P0340. After some research I found that the car need a 4x reluctor and the 2000 has a 1x. Can that be fixed with tuning or do I just need to tear it apart and install the correct gear? I think I already know the answer but I just need to hear someone else say it... Thanks