I have a 99 grand am that i put a 3800 supercharged motor in. I used a 2000 grand prix motor,tranny PCM and wiring. But when i put the grand prix PCM in it . I got around the theft system but the gauge cluster did not work. The car would run after i used starting fluid to fire it up. But the signal to the cluster is different. So i put the grand am PCM back in it. It will start right up but it runs rich and the tranny does not shift right.Everything else works. I think i need a hybrid PCM. Does anyone know how to fix this problem? Grand prix PCM i have not gauges or the grand am PCM it runs rich and the tranny does not shift right.You can email me at [email protected].