So I have been having a few electrical gremlins with my C5. One issue is when my lights are on I have to turn on my highbeams to get my headlights to go back down. The other issue, after replacing the left side fuel pump, is an intermittent fuel level gauge issue. I've read up on it and found that the grounds on the front fenders are the most common culprits for weird electrical problems. I disconnected my battery and I'm in the process of cleaning them. I have the grounds themselves soaking in vinegar. I wire brushed them as per recommendation, and then put them back in the container to soak a bit longer. So, my question is....will disconnecting my battery reset my ECU? I just had it tuned and don't want to lose it. My other question is if cleaning the 2 grounds on the fenders doesn't work, what else should I check? The bumber grounds, etc.?. Thanks.
Sent from my SGH-I747M using Tapatalk 2
Sent from my SGH-I747M using Tapatalk 2
Last edited: