RickJennings

A few months ago, my wife's corvette started having many of the problems described in Bill Curlee's thread. I could not find all the grounds, but after cleaning the ones I could find, the car ran fine for a few months. I also cleared all of the DIC codes.

Now fast forward to the past few days, same problem as before, bells and lights going off, Low fuel, Reduced Engine Power, Traction Control, other random failure codes and the windows do not roll down, the door locks do not unlock, and the list goes on and on.

I just pulled the codes and here is what I got:

10-PCM
P1626H

28-TCS
U1301H
U1016H

40-BCM
U1255H
U1016H
U1096H

58-SDM
U1301H
U1096H

60-IPC
U1255H
U1016H
U1064H
U1040H
U1088H
U1176H
U1160H

80-Radio
U1016H
U1064H
U1096H

99-HVAC
U1064H
U1096H
U1160HC
U1255H
B0367H

AO-LDCM
No Comm.

A1-RDCM
U1255H
U1064H
U1016H
U1096H

A6-SCM
U1300H
U1225H
U1160H
U1016H
U1064H

BO-RFA
U1255H
U1064H
U1096H
U1016H

Any suggestions?

CactusCat

Rick, could be several things. My first thought was possible ignition switch issues (well known on our C5s) or possibly one of the door modules. However, here's a link that is almost identical to yours and what his problem was and how he fixed it. It's sort of old and the pictures are missing but you'll get the drift. Check it out. http://www.arizonacorvetteenthusiast...-system-fixed/

The No Comm on the LDCM might be where I'd start. Bill Curlee says to grab the accordian cover (when the door is open) and shake the crapola out of it. Might simply be a bad connection in the wires there.

Bill Curlee

Brother.......... Your issue is not ground related.

The electrical connectors inside the DOOR/s A pillar (remove the rubber accordion tube) has damaged female pins in the SIX PIN POWER CONNECTOR. They are spread apart and make shitty connections. That corrupts the serial data buss!!!!!!!!!!!!

Fix the damaged SPREAD APART female pins, clear all those damn DTCs and see where your are at!!

BC

RickJennings

Thanks all, I found the connector in the A pillar, what a pain in the a$$, not to mention I had trying to separate electrical connectors.

Bill I'm not sure what you mean by "fix the damaged SPREAD APART female pins. I really am not a mechanic, but will attempt most anything, just know sure what to do?

RickJennings

Correction, I HATE trying to separate electrical connectors.

RickJennings

Okay, took an educated guess, pushed the female so that it would make better contact with the blades, I think.

Cleared all the codes, took the wife's car for a spin,the driver's side window worked, no bells and lights, however the driver's door did not unlock when I turned off the car, but the passenger's side did?

Checked the codes when I got back and had the below codes:

60-IPC
U1255H

99-HVAC
u160H

AO-LDCM
U1064H

RickJennings

Thank you 8Vette7 for the information. I did everything you suggested except disconnect the negative battery cable, duh!!!! Have not done much mechanical work on a car, but I should have remembered to disconnect the battery.

twokbolt

Does the driver's door unlock if you use the driver's side door switch?

CactusCat

Absolutely the truth Rick! We might know how to take em apart but they can still be a PITA. We got your back bro! Diligence and patience will persevere.

RickJennings

twokbolt,

Yes the driver's door locks and unlocks when using the driver's side door switch, and with the key fob. I told my wife check out the lock when she is driving today. Maybe in all my excitement of no "Bells and Lights" going off I was not paying attention? Will know more when she gets back home.

RickJennings

Catcuscat,

Very nice!!! My wife is taking her car out today, so keep your fingers crossed. If all goes well, thanks to everyone on this forum who made me a genius in my wife's eyes, if all does not go well there will be more than 3 cuss words spoken.