Hey guys I have a 02 2500hd. I have code 327 and 332 after washing engine. I replaced both knock sensors and the harness but the codes both come back. I've installed new Ac delco plugs and fuel filter. I check continuity between the harness to the ecan and it was good. I'm just not sure what else to check. If anyone has any ideas I would greatly appreciate it. Thanks in advance !!!
