vetteguy61
New member
I just had all the grounds and connectors checked and cleaned on my 2001 vette. I am still having trouble with the check engine light,service traction control and reduced engine power coming on when I'm stopped or driving. The latest codes to come up were P1221,P1515,C1278. I'm starting to pull my hair out over this problem. Anyone had this problem or can point me in the right direction. Thanks.:confused