My exterior mirrors have memory. After I store the settings ever time the setting are recalled the right mirror moves a little.

After a couple of car starts I have to realign the mirrors.

Anyone have an idea of how to fix this problem?

 

tell your wife to stay out of the vette (other than that I have nothing)

 

My passenger one has did this since the day I've got it. I've learned to get in the habit of leaving the driver door ajar when you first put the key in- that way it does not activate the memory function. It might be the BCM has a hiccup but don't go replacing it- I'm really not sure

 

I've had the same issue with my current and previous Zs, but my current it's the left mirror that moves. I'm thinking about just disconnecting it. Not sure if that will throw any BCM codes though.

 

Rather than work around it I would much rather fix it, but I am not sure where to start. Is the problem in the position sensors, which I assume is inside the motor or in the control module?

I quess it could be a poor connector some where.

Has anyone actual been successful in fixing this problem rather than just living with it?

 

definitely on my list to fix as well. Wonder if the left BCM and be swapped with the right BCM to see if the problem follows the BCM...

 

Start by pulling your dash DIC codes.

I would also consider disconnecting the car battery for about 5 minutes and see if that helps at all.

I think the previous poster meant door control modules. There is only one BCM.


Mr. Sam

 

No codes are generated. The right mirror just moves right a bit. If I press the recall button again it moves right a bit more. Eventually it hits the stops. It is a bit of a safety issue, a quick glance may show I am clear when I am not.

I kind of hate replacing parts until I find the problem, but I realize this may be the only option. Should I start with the door control module or the motor in the mirror itself?

Are the left and right module the same? Do I need to reprogram after replacing?

I will try the battery disconnect, but I am not very optimistic.

 

Left and right door module are not the same but can be swapped for trouble shooting. No reprogramming required. Could be the SCM or the RDCM. It only moves when commanded.


Mr. Sam

 

My mistake, I do have a couple of codes.

20-TCS C1225 H
A0-LDCM B2264 H
A0-RDCM B2265 H

I have not had a chance to look them up yet, as I wanted to correct my previous post ASAP.

Of course these are history codes. I did clear the codes and verify that the problem is still there. The codes have stayed cleared but I will know more later when I drive home.

 

Mirror Position Sensor faults. Vertical on driver side and horizontal on passenger side.


Mr. Sam

 

That makes total sense. Assuming there is something wrong with the sensors what do I replace? Are the sensors in the mirror motor?

 

I can post the info if you want to try and diagnosis but I think it is your position sensor.

You can install new/used guts into your mirror housing if you want to. Here is how to get into the mirror.

This guidance is for removing just the mirror insert (with plastic surround) in cases where the actual mirror has an issue or you need to access the motor assembly behind it.
The mirror housing can be left attached to the door.

Before you start, place a blanket under the door so if you drop the mirror it will not break and if any of the positioner pins come out they will not be hard to find, There are 4 of them.

Move the mirror all the way up or down so you can get your fingers behind the mirror.
Placing some tape around the housing edges before you start so as to not scratch the housing paint would be a good idea.

The mirror connects to the motor assembly with 5 snap in connections.

One is the main pivot ball in the center, The other 4 are smaller with one above, below, left, and right of the large center pivot.

The 4 smaller ones are driven by the motor assembly to position the mirror.
Have a friend hold the mirror housing while you pull on the mirror insert.
The mirror insert should “pop” out and be released.

Note: Now you will have to remove the heated mirror wiring connector and if equipped, the connector for the auto dimming.

One or more of the position pins may come out with the mirror insert or just fall on the ground. This is OK and not an issue.

If any pins come out they should have a spring attached to them so don’t lose the springs. The pins actually are inserted into the springs.

When I removed my mirror insert one pin came out with the spring still attached to the mirror insert. I simply removed it from the mirror insert just reinserted it into the motor assembly before I put the mirror insert back on. Everything worked just fine after I finished.

The mirror insert has “cupped” like connectors that the pivot and pins fit/snap into.
Use a good silicone type lubricant on the pins, pivot, and mirror insert connectors to make reattaching the mirror insert easier.

Please note the 4 pins have a small protrusion that has to be aligned correctly to match the mirror insert connectors . Not hard to “eyeball” the correct alignment but if not close the insert will not snap back onto the pins.

You should now be ready to reinstall the mirror insert.
Reattach the one or two wiring connectors.

If your new mirror does not have the electrochromatic feature (and the original did) just tape the wires off and make sure they are stuffed back so they don't interfere with the mirror motion. It will be apparent which wires are for the heating element versus the auto dimming.

Have a friend support the housing so it does not move when you press the mirror insert back in.

I recommend (must do or similar) cut a block of wood to cover as much of the mirror as possible so when you press in back on so you distribute the pressure and don’t break the mirror. Also place a small towel or soft material between the block and the mirror so as to not scratch the mirror.

As you start pressing the mirror insert in, try to put move the mirror insert and motor assembly so it is not tilted like you did when you removed it. You want all the pins and pivot to snap in at one time.

It takes a good amount of pressure to snap the mirror insert into place. That is why you need a friend to hold the housing and you need to lubricate the pins/pivot and the mirror insert connectors.

If it does not snap in with “reasonable force”, remove the mirror and double check the alignment of the 4 pins. I found out that I had not correctly aligned them all and had to redo that and then it snapped in.

When I reinstalled my insert I did not have a friend to help so I had to press with one hand while I held the housing with the other. It takes good amount of pressure to snap it in but I did it with one hand.

Good luck.

PS:
Remember if you are replacing the motor assembly there are 2 types. One with Memory and one without. The one with Memory has 2 connectors, not one. The one with memory has an additional 4 pin connector.



Remember there are Memory ones and Non Memory ones.


Here is how to get into the door to unplug everything.

http://www.vetteessentials.com/instr...or_handle.html



Mr. Sam