A tuner will give the exact code. Autozone can read codes as well I believe. A tuner can erase the code, but once you start it, the Coe will come back You need to find out the code.
chevy runs deep, Don't step in chevy!
289 - Holley 4150 570cfm; Performer intake; mild cam; MSD HEI; 302 heads; Roller Tips; Hedman Tri-Y headers; H-pipe w/Flowmaster 40's; 9 in posi 3.50; 205/50-17F; 225/50-17R.