i had the same thing happen to me. But my alternator took a ****.
r you still getting power to all the gauges and stuff? you might want to check it.
2000 z28 489rwhp, SD tune, D1sc Procharger, SDCE 8 rib kit, 7 lbs of boost , ATI Balancer, AC delete, Hooker cat back , Pacesetter long tube headers, ORY, racetronix 255 pump,60 lb injectors, Koni 3/4 SAs with Strano Springs. APHR. 315 nittos in back. Wideban AFR, Fuel pressure, boost and 3 piller pod. FMIC with bigred. Battery in back, and relocated coolant tank. Ttops lost-1