electrical help needed

[miamiguy305]

hello all while driving home a few nights ago first my radio goes off then all i get a check egine light one , service active handing , low fuel , shocks not something cant remember what that one said. along with that my windows would not go down., also had reduce power and max speed 80mph.made it home try to start it right away again and it was dead only had lights on dash and on shift console. the next moring all worked fine for about 5min and then all the above happened again.

FYI:

the last two days my car at start up has 14.2v as i drive the voltage goes from 14.2 to 13.8 to as low as 11.7.

i had both the alternator and batery checked both are good. i have also cleaned all the grounds in the engine compartment.

while cleaning grounds i notice water res on what looks to be the bottom of the floor board where the bcm is located. took apart the bcm doesnt look to have corosion on the board. i am getting 12.0 volts when i measure with a meter the batery as well as the alternator.

as far as codes are concerned i have no commications for the RTD.
and a C1214 code. that has been around on and off for a few months now.

at this moment car will start fine , check engine will display , as well as shocks unoperble. service traction control and Abs both lights are on also on dash. car continues to loose votage the longer it stays on. please help.

[leadfoot]

Wanna keep this up top cause this guy has troubles. Several electrical issues that have evaded resolution. He was refered to the Corvette master C4C5. C4C5 is traveling to PA this week for a GM event at Carlisle. He is filming a TV spot I understand. Might ride on out there on Saturday to say hello and gawk at all the fine GM machines and them foxy PA women. Hope you get it figured out Miami. Been raining? when you were driving home? My money remains on a ground failure. Have you checked the torx of the battery cables? Best of Luck

[c4c5specialist]

HI there,
You MUST post all codes in all modules in order for us to assist further.
Please remember, codes tell us alot.

T V commercial, not that Im aware of. Just doing seminars, we had 3 people there today, Im hoping tomorrows better.
Yes, I am here in Carlisle.
Sat seminars are 9am till 1030 and 2pm till 3pm. Then, Im headed for home.

Allthebest, c4c5

[jvdaniel]

I had the same problem in 2006, with my 00 Vert. I removed the pc board from the BCM case, I found that water had tracked down and shorted the circuits. I cleaned the board with contact cleaner, rags and Q-tips. I haven't had a problem since.
It's not hard to remove, and I figure, if its already broken, I can't break it.
I also draped a piece of plastic over it to deflect any water that may leak in again.

[miamiguy305]

hey C4c5,

here are the codes from the from the DIC. please note i am currently replacing my ABS module for a c1214 code from ABSfixer.com. and i am also replacing the RTD module as it got water in it some how and shorted out. so i am getting NO COMM from both of those modules. also please be advice that the shop where i had car try swaping my BCM to see if it was good as it had some water signs near the connections no water found inside.

10-pcm

P1571 HC
P1652 HC
P1689 HC

40-bcm

B0502H
B5007H
B2482H
B2587H
B2592H
U1096H

58-SDM

U1040 HC

A1-RDCM

U1096 H

currently im getting serivce engine soon , also shocks un operble as well as both my ABS and traction lights are on. i also continue to have the votage start out fine and work its way down to low 13's high 12's on the meter inside the car.

please help.

[c4c5specialist]

Originally Posted by miamiguy305

hey C4c5,

here are the codes from the from the DIC. please note i am currently replacing my ABS module for a c1214 code from ABSfixer.com. and i am also replacing the RTD module as it got water in it some how and shorted out. so i am getting NO COMM from both of those modules. also please be advice that the shop where i had car try swaping my BCM to see if it was good as it had some water signs near the connections no water found inside.

10-pcm

P1571 HC
P1652 HC
P1689 HC

40-bcm

B0502H
B5007H
B2482H
B2587H
B2592H
U1096H

58-SDM

U1040 HC

A1-RDCM

U1096 H

currently im getting serivce engine soon , also shocks un operble as well as both my ABS and traction lights are on. i also continue to have the votage start out fine and work its way down to low 13's high 12's on the meter inside the car.

please help.

Hi there,
You have multiple issues, as relates to communications. This is shown by the U1040 in the SDM and the P1571 from the PCM.
YOUR TCS module is MORE than just the C1214, there is a problem with the communications within that module.
It will require more than just a relay replacement.
You will need to clear ALL CODES, install the repaired module and then reevaluate the condition to see what comes back.
Allthebest, c4c5