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Hi there, corvette community!
I just recently purchased a 2003 c5. Did quite a bit of work on it just to get it running but have now run into another problem. About 6 weeks ago, I noticed my drivers side window wouldn’t go down and that it was an intermittent issue. I pulled the Dic codes and it showed my ldcm as having no communication. In addition to this, the car would intermittently lose communication with other electrical components, causing a “reduced engine power” notification to come up. This problem disappeared after replacing the battery and cleaning the studs on main grounds. Now, the problems have returned and are happening multiple times a day, during my commute.
When it happens, the dic shows “no communication” for all sections of the diagnostics. Recently, I discovered that I can get the issue to recreate itself consistently by activating the powered seat motors, so I unplugged them to try and split the halves there, but to no avail. The problem still occurs. I’ll attach a photo of the issue below. The DIC is showing “reduced engine power”, Service tire monitoring system, check tire pressure, and low fuel. Oil pressure gauge goes out and as does the coolant temperature gauge.Anyone have any suggestions on what to do next? I’d greatly appreciate it. Thanks!
You most likely have a serial data buss issue, all the cars modules communicate on a single wire that connects them together. Many a c5 corvette owner has corrected this problem by ensuring that the electrical contacts of the connectors that connect the doors to the car are making good contact.
You most likely have a serial data buss issue, all the cars modules communicate on a single wire that connects them together. Many a c5 corvette owner has corrected this problem by ensuring that the electrical contacts of the connectors that connect the doors to the car are making good contact.
Got a look at the door computer and figured out it is the red connector that is causing the horrors. I can’t quite figure out how to close the cylindrical female connectors though. Any tips?
I don't know what you mean by cylindercal female connectors, the connectors should be square shaped with male and female contacts. The female contacts are bent back with a small pick so they make good contact with the male pins again.
Sorry about the misunderstanding, I mistakenly thought you were talking about the connectors between the door and car. I am unfamiliar with the connectors that plug into the door module,
Electrical Failures
