Body Control Module - 1994 Corvette

[glazounov]

Hello to all,

My Chevy mechanic tells me that the recent electrical problems in my 94 C-4 convertible are being caused by a faulty BCM (Body Control Module - also called Central control Module, or Central "Command" Module).

Does anyone know where I can get one cheaper than $240 or so?

If I have the Chevy dealer install a new one, it's going to cost me about $720, including approx. 5 hours of labor ... but there's no way I'm capable of jumping into this project by myself ... or is there a way around tearing into the dash, etc.?

Is this is a common occurance? Any suggestions?

Thanks a million!

Denny

 

[jmccloud]

CCM gone bad???

What are your recent electrical problems?

Usually it's only corroded ground connections.

 

[glazounov]

What are your recent electrical problems?

Usually it's only corroded ground connections.

The problems: Sporadic power windows, dome light, & radio operation, battery drain (on a brand new battery), etc., etc.

Mechanic "tap" checked the module as well as the connections: When he tapped and physically jiggled each of the connections - everything was fine ... but tapping the module itself, however, resulted in the radio, interior lights, etc., blinking off & on.

I guess it's best if I just have him change the module (especially now that he's put in the labor to tear apart the dash), what do you think?

Denny

 

[-=Jeff=-]

Yep sounds like the BCM or CCM.. Problem is you need to have the dealer remobve the old one and program the new one with your current mileage and the rest of the CCM.

Find another dealer.. $240 is the cost but labor should NOT be 5 hours. i can have the BCM out and back in within 1-1.5 hours

 

[cazorp]

Similar Problems

I am having the same problem and I emailed Fichtner Chevrolet. They quoted me a price of 232.12 for the part and then informed me that I would have to have a GM tech install it in the car. It is warranted for one year. They took off about 100.00 from the list price.
Mine is a 2001.

Hello to all,

My Chevy mechanic tells me that the recent electrical problems in my 94 C-4 convertible are being caused by a faulty BCM (Body Control Module - also called Central control Module, or Central "Command" Module).

Does anyone know where I can get one cheaper than $240 or so?

If I have the Chevy dealer install a new one, it's going to cost me about $720, including approx. 5 hours of labor ... but there's no way I'm capable of jumping into this project by myself ... or is there a way around tearing into the dash, etc.?

Is this is a common occurance? Any suggestions?

Thanks a million!

Denny

 

[Ken Anderson]

It must be programmed within 50 miles of operation by a GM TECH II scanner or you will be buying another one.

 

[c4cruiser]

Hopefully the techs have thoroughly checked out the car's electrical systems. Most electrical problems involve bad grounds or dirty, corroded connectors. If they have singled out the CCM as the problem you will need to have the replacement done by a dealer or a shop that has the proper equipment like a Tech-1 or CAMS (T-100) to do the CCM programming.

A replacement CCM must have its' EEPROM chip programmed. Data items loaded to the EEPROM include the VIN, certain option codes and the car's current odometer reading. The new CCM must also be downloaded with the Pass-Key resistance value of the keys that came with the car.

If the car is driven more than 100 miles, it will be impossible to download the data to the EEPROM.

The labor sounds like a bit much but they are probably going by a flat rate labor manual instead of the actual clock time to do the work. This is typical for shops that do not do this kind of work all the time and may not know how to do it without referring to service manuals. I would think that a couple hours of actual work should do it not including the programming time.

 

[PointHope]

Windows died on 1994 Vette

Very mysteriously the windows died
2 hours apart. Could be the Ccm or ECM//// . On a related note: I afterwards arced the Ccm with current from clamp attached to battery. The brain box did not fry. What burned was the cable attached to the positive battery terminal. They can't remove the old one --- but will put a new one in right next to it. Sounds crazy--- but this guy is a very good Vette mechanic. I just want to get the car on the road again. ////// I thought maybe the door window switch fried when I pulled down both windows simultaneously. ( don't do that!!!!--- you are looking for trouble!)
I will address this old problem soon. Hopefully I will win enough on the Kentucky Derby to but a new Vette and my troubles will be over. Lol.
Best wishes--- Point Hope

 

[Hib Halverson]

"Arc" the CCM with current from the battery...then bet on the KY Derby.


Guess there's a message in that, somewhere.