My wife daily drives our 2000 FRC. Yesterday, she text me at work and said on her way to work the car's dash went crazy...it started flashing all these warning messages, and the check gauges, security, and TCS light were staying on. The issue went away before she arrived at work, and didn't present itself again on her way home. I checked the battery terminals, cleaned them and tightened the bolts to spec.

Today, she texts me on her way home and says the car is doing it again, although this time, everything is staying on. I go outside and meet her in the driveway, and see all the issues for myself and pull 13 codes. Here's what the car was doing:

-Check Guages, Security, and TCS light are all staying on.
-The doors will lock and unlock randomly.
-Radio works intermittently.
-The engine will stumble/stall intermittently, and act like its going to die, but then come back up to idle. I only witnessed it do this a couple times before it started acting normal again.
-All warning messages are flashing on the dash: Service Traction Control System, Service Tire Monitoring System, Check Tire Pressure, Service Vehicle Soon, Low Fuel, and Service Active Handling.

I pulled the codes and every one of them is historical except for one...HVAC U1160. That one will not reset.

The rest of the codes are (and I apologize, I forgot I could scroll back through the codes so I was trying to write them down as they were displayed, and I forgot to write down "P" or "B", etc. Hopefully you guys can still tell what these codes are...)

P1626H
1301H
1016H
1255H
1096H
1301H
1040H
1064H
1088H
1176H
1160H
2283H
2285H

The DIC also shows "LDCM No Comm". I'm honestly not sure what that means. After resetting all codes, the dash and car appear to be back to normal for now.

I just bought this car recently, so I don't know a hell of a lot about its past. I took the battery out and took it to Advance to have it tested, and they said its perfect. I'm guessing this is some sort of ground issue, but I wanted to get some opinions from you guys. This car is always garaged, although I recently took it on a vacation trip to coastal North Carolina where it was parked outside all week and got rained on quite a bit. (Unfortunately) it was also in a minor accident where a lady in a Jeep pulled out of a grocery store parking lot without stopping and hit the front passenger side fender just behind the tire, causing only minor cosmetic damage. I'm only including that info in case it could have possibly affected something that would cause this.

Help?

 

Pop the rubber accordion boot going to your driver's side door loose and inspect the wiring and connectors. Bill Curlee has a good thread on this somewhere, let me know if you can't find it...

 

Thanks, checked that connection and everything looked OK. Going through Bill Curlee's thread (sticky) now...

 

OK, so first pics in Bill Curlee's sticky are of the chassis grounds on both fenders...you should have seen the white and blue corrosion on my driver's side ground. It looked pretty bad. So cleaned up the ground post and connections and got them good and shiny. Pulled the connector itself apart and really didn't see much corrosion at all in there...it looked pretty good. So I finished that side, and then cleaned the passenger side chassis ground as well, although it didn't look bad at all. Figured I might as well while I was at it.

Took the car out for a good 20 minute drive, and noticed no issues. No codes thrown, no hiccups, nothing. Not even a historical code showing now...and the LDCM No Comm is gone, too. I'm kind of nervous about my wife driving the car now, since I'm leaving on a hunting trip tomorrow for a week...may just have her drive the truck to work, and drive the Corvette close to home until we're sure no issues will pop back up.

 

My car the same thing the other day until it was running only on the left bank of cylinders. I talked with Bill last night and will do the accordian thing this weekend. He also mention the BCM - in the passenger foot well needs to be checked to water from the AC/washing/etc.

I'll get back on it this weekend.