We have seen this issue come up in the last week on my wifes vette. The passenger side window does not go up or down with either control, passenger door or drivers door. But if you open up the door and close it sort of hard the window starts to work again. I'm thinking it may be a bad control module in the door. Am I on the right track?

We have also seen if the car is driven in the rain it starts to throw codes on the DIC. Not sure right now which ones but all Lori has done is to shut the car off wait a couple of seconds and start it up and no codes. But it only happens in the rain. It happened on the way back from Mi and today coming down to OC. I know before anyone mentions it, it should not be driven in the rain. And I totally agree but sometimes that can not be done....

Any answers to both issues will be greatly appreciated.

 

I haven't had the window problem but I've read about it a couple times here. I think you are absolutely correct. the door control module has a relay in it which closes when the window goes up...maybe a different one for down? and they go bad causing the window to not work. usually a shock such as hitting it with your hand or slamming the door will make it work again but only temporarily. you'll need to either replace the module, or remove it and open it up and try to replace the relays, mouser carries just about everything, and I bet someone here can tell you exactly what you need. you'll probably need to desolder the old one and solder in a new one. sorry I don't have any more specifics, but I'm pretty sure that will fix your problem.

 

as for the other problem, search here to find out how to read the codes, see if you have the 1224 I think it is...does she see Service traction control, service active handling etc on the DIC? if so you likely have an EBCTM malfunction, a very common problem. there are many threads with alot of good info on them to help you fix it.

sorry for the misfortune, I hope you are able to get these problems fixed and continue to enjoy your car!

 

I had the window problem on my 2000 a couple or so years ago. It also affected the door locks. Replaced the door control module and all is well

 

Thanks mcgilles... I thought it was the door module. I will most likely just pick up another module and replace it. Easier then replacing parts in it...

I'll have to pull the codes but I do remember coming home from Mi it was throwing all kinds of code just like you mentioned. So I'll start looking into a EBCTM module. BTW what does EBCTM stand for?

 

Will an 02 Door module work in a 99?

 

Wayne, check the accordian going from the fender to the door. Inside there is all the wiring, and in Bill Curlees electronics sticky, he shows where the wires can get frayed, and just plain pulled away from their insulation. This causes them to be bare, and ground. If this is the case, then nothing would work, cause it would be grounded and no power would flow through the wire. Also, if the wires are showing, then getting them wet could possibly cause a shorted condition, which would throw codes as well.
I'd check there first. It's quick, easy, and if that IS the culprit, simple to fix.
See ya this weekend!

 

Thanks Tim... I'll have to check that out.... We are already down here and enjoying it. Have to wash the cars tomorrow hit rain on the way down. My Luck spent most of the day yesterday cleaning both of them.... Oh Well at least when we left they were clean....

 

Check he BCM if it is wet. If it is, it will start causing all kinds of problems with the codes. Also, check for any batery leaks. Check all the ground points and clean them. There are many threads that show the ground points. I once had this problem and in my case it was the corroded battery terminal bolt.

I will call you guys tomorrow and walk you right thru it. In very rare case, it could be the door control module too.

 

Thanks Nomi... Battery should be OK, new battery only 1.5 years old... But when we get home I can pull it and check...

I'll need some help on all the ground points where they are...

It could be the door module because this did not happen on our trips to MO or KY both in rain. But now window problems and codes in rain.... Makes you think....

 

Thanks Chuck and both of those will be checked over when we get home. Have some tools with me but not my entire garage...

 

Looks like you had some good advice Wayne and I'll offer my 0.02c.

I'd be thinking along the same lines and I think sneakelman has it. When the door slams its causing whatever is at fault to clear and the window starts working again. Also, when the rain gets in its causing a short and you get the DIC codes. The fact that both problems are there means they could be linked.

Applying some logic - dangerous I know - I'd say there are probably two likely causes and both have been suggested.

I'd start with the accordian because the combination of the two makes me think it may be a short to ground. If you have any chafing of the wires or any corrosion of the connectors thats the problem. Chek the wiring closely for nicks and pull the large connector and clean it up. Maybe give it a squirt of electrical cleaner and some dielectric grease.

If thats OK then I'd suggest its probably the door module. Check out Bakersfield's post on door modules.
http://forums.corvetteforum.com/show...ht=door+module

Its the definitive post on those issues and contains some great pictures. When it stops working give the door a gool old rap just below the handle area. Thats where the door module sits. The vibration will probably free up the sticky relay and it'll start to work again. Strange but true

The "percussion technique" may work for a while but eventually you'd probably need to replace the relay or the door module.

On the codes, you should post up what you have. Any of the U codes are probably caused by the electrical fluctuations. Unless theres a "C" for a specific function, I wouldnt start worrying about EBCM issues just yet.

Finally, although batteries can cause many random codes, I'd be thinking something different at this stage given the nature of the two problems ............... although its always a possibility.

Hope you find it.

 

Gotta get the codes Wayne. That will tell you a lot.

See you Saturday.

 

Wayne, My $0.02 is on the wiring from the body to the door itself. I had the same issue a while back. Finding the exposed wire and a little electrical tape did me just fine.

Now, if you two would just start taking care of your cars you wouldn't have this kind of problem

Take Care

 

Wayne,

I've had the intermittent pass window problem and I can tell you what has worked for me every time.

First, when it happens, do you hear a click when you press the window up/down buttons? I had to remove the door skin and speaker, then lightly tap on the end of the window motor. I will assume it "freezes up" because it's not used as frequently as the driver's side.

I've done this 3 times now, and usually after the car has been sitting for a while. The last time I did it was around March/April of this year.

Hope this helps.

 

Sheeeetttt I already have you on speed dial