Driver Side Window Control not lowering passenger window
Thread Starter
Pro
Joined: Apr 2001
Posts: 539
Likes: 4
From: Rochester, NY
Driver Side Window Control not lowering passenger window
I own a YR 2000 vette and the driver side window control unit won't move the passenger window up or down - It used to work occasionally, but hasn't worked for a week straight now
What is the solution(s) to fix this issue?
What is the solution(s) to fix this issue?
Le Mans Master
Joined: Mar 2011
Posts: 6,835
Likes: 302
From: Columbia SC
I don't have enough information to say the passenger switch is the problem.
If it is a problem, then it does not explain why the driver side cannot operate the window at all. The drive side control does not use the passenger switch in the circuit.
asx67, you owe me the codes. We need to fix what is wrong at the passenger door and then see if that resolves control from the driver side.
I have several ideas on what the issue may be but I want to start with codes.
Can you use a multimeter to measure resistance and voltage?
Let's try not to throw parts at the problem without knowing what is wrong.
Mr. Sam
If it is a problem, then it does not explain why the driver side cannot operate the window at all. The drive side control does not use the passenger switch in the circuit.
asx67, you owe me the codes. We need to fix what is wrong at the passenger door and then see if that resolves control from the driver side.
I have several ideas on what the issue may be but I want to start with codes.
Can you use a multimeter to measure resistance and voltage?
Let's try not to throw parts at the problem without knowing what is wrong.
Mr. Sam
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Melting Slicks
Joined: Apr 2010
Posts: 2,194
Likes: 146
From: Houston Republic of Texas
St. Jude Donor '10-'11-'12-'13-'14, '16
Good news,bad news, the problem (which is the good news) is you need a new passenger electric modulator. The bad news is they don't make them anymore,but your dealer might have one on the shelf for $385.00, or you can call Marc at Vettnuts and get one used. Now that being said,I've gone through 3 used ones which would have been the cost of a new one. If you can take your door panel off,it's very easy to change,2 bolts and 3 plugs.Just make sure you get the same part # ( mine is 09389699) because if you mix them you might mess up your electrical system. Now if you can afford it,Gene Culley has new remakes, but you have to get both sides,roughly a little over $900.00. This is a common problem on the C5's they say because the passenger window doesn't get used enough,but I put mine down all the time,so go figure. Sorry for being long,hope this helps you out. Marc's # is 615-896-6100,good luck. L8R ZFLASH
Melting Slicks
Joined: Jul 2013
Posts: 2,012
Likes: 23
From: Anaheim CA
...in principle, but at least the way I read posts #3 and #5, I think he meant the passenger-side switch works fine and he can sometimes get the passenger window to move by pushing the driver-side switch very hard.
Melting Slicks
Joined: Jul 2013
Posts: 2,012
Likes: 23
From: Anaheim CA
I could have sworn that there was a thread in the last month or two from some vendor here (not Gene) who had new clone regulators for a rational price.
Le Mans Master
Joined: Mar 2011
Posts: 6,835
Likes: 302
From: Columbia SC
Thanks Lee, I may have misunderstood what switch he was referring to when he corrected his prior information.
I am still interested in diagnostics unless the OP wants to throw parts at the issue. I am still waiting on codes.
OP, you need to clarify the issue on the switches.
Lee, Did you mean clone regulators of door modules? There are suppliers of non GM regulators out there.
I am still interested in diagnostics unless the OP wants to throw parts at the issue. I am still waiting on codes.
OP, you need to clarify the issue on the switches.
Lee, Did you mean clone regulators of door modules? There are suppliers of non GM regulators out there.
Melting Slicks
Joined: Jul 2013
Posts: 2,012
Likes: 23
From: Anaheim CA
Then again, I'm old, and a quick-and-dirty search didn't cough it up.
[EDIT: Ok, I see what happened...I misread "modulator" as "regulator" in post #9. Regulator is the mechanical scissor-arm and motor assembly, right?]
Last edited by Lee DeRaud; Jul 24, 2015 at 11:17 AM.
Melting Slicks
Joined: Apr 2010
Posts: 2,194
Likes: 146
From: Houston Republic of Texas
St. Jude Donor '10-'11-'12-'13-'14, '16
Regulators, not door modules. Like I said, it was a forum vendor, and as I recall the price was low, like ~$100.
Then again, I'm old, and a quick-and-dirty search didn't cough it up.
[EDIT: Ok, I see what happened...I misread "modulator" as "regulator" in post #9. Regulator is the mechanical scissor-arm and motor assembly, right?]
Then again, I'm old, and a quick-and-dirty search didn't cough it up.
[EDIT: Ok, I see what happened...I misread "modulator" as "regulator" in post #9. Regulator is the mechanical scissor-arm and motor assembly, right?]
Instructor
Joined: Oct 2014
Posts: 195
Likes: 7
From: Greenfield In
St. Jude Donor '16
I had this very thing happen yesterday. I ended up pulling the boot between the door and pillar back, and moving the wiring around while pressing the button. The pins at the connector were loose. I ended up fishing them up and tightening them up on the female side for a stronger connection. I got this info from performing a search in the tech section.
Melting Slicks
Joined: Jul 2013
Posts: 2,012
Likes: 23
From: Anaheim CA
Lee and Dadaroo, I get them confused too, I mean the little black box located right below the door handle. This box doesn't throw codes, my old ones wouldn't work, then when taking it out and laying it sideways it would work. It was getting power,it's just something on the circuit board wasn't making good contact anymore. Sorry if I ruffled some feathers,I was just speaking from my past experience with this issue. Thanks guys,L8R ZFLASH
Le Mans Master
Joined: Mar 2011
Posts: 6,835
Likes: 302
From: Columbia SC
Lee and Dadaroo, I get them confused too, I mean the little black box located right below the door handle. This box doesn't throw codes, my old ones wouldn't work, then when taking it out and laying it sideways it would work. It was getting power,it's just something on the circuit board wasn't making good contact anymore. Sorry if I ruffled some feathers,I was just speaking from my past experience with this issue. Thanks guys,L8R ZFLASH
Each door does have a Door control Module and they are on the serial bus. Actually the driver side uses the serial bus to operate the passenger side. That saves wiring and weight.
There have been lots of issues with the connector in the door A-pillars that have caused serial bus issues. Each module can throw lots of codes since it also keeps mirror control features.
Thread Starter
Pro
Joined: Apr 2001
Posts: 539
Likes: 4
From: Rochester, NY
No codes are being 'thrown' except a tire pressure sensor
The passenger side window always works - The driver side control unit that controls the passenger window works occasionally - When the driver side window control is able to lower the passenger window, I have to press the down button very hard for it to work
Thanks for the effort to resolve this
The passenger side window always works - The driver side control unit that controls the passenger window works occasionally - When the driver side window control is able to lower the passenger window, I have to press the down button very hard for it to work
Thanks for the effort to resolve this
Last edited by csc67; Aug 12, 2015 at 09:42 PM.
Le Mans Master
Joined: Mar 2011
Posts: 6,835
Likes: 302
From: Columbia SC
Sure sounds like the driver side switch is the problem. I would remove it and test the contacts or jumper the connector pins to see if the right window works OK. Could be the driver door module but the switch is more likely based on what you said about having to press the switch so hard.