sunroof power locks and interior lights all quit....help

[beeman212]

went out for lunch and pushed unlock on remote and lights flashed but power locks didn't work so I unlocked car got in started it and tried to go from sunroof vent to fully open sunroof and it stopped in full vent mode and wont work also noticed none of interior lights are working even map lights are out...
so I checked all fuses and cant find a problem... all fuses are good checked with multi meter.... also my stereo failed to power on till a few mins after car was running and driving then it powered on and played like normal but it didn't come on at first like it supposed to.....
any ideas? what would make all 3 of these things quit?
BTW a few weeks ago while I was in ohio I noticed my driver rear power lock had quit working but the rest worked until this happened today after I had drivin it to work and it sat for a few hours then I came out and found those things wouldn't work all of a sudden.... any ideas?

[beeman212]

Update... remote trunk release not working also no vanity lights or interior lights and if I push lock or unlock the outside lights flash but power locks won't work

[ddalder]

With some widespread problems, I'd start with some of the basic things... Have you checked the battery and battery cable connections? Have you scanned for codes?

[beeman212]

Yup no codes and disconeccted battery and checked connections all good with 3 month old battery... car operates normally other than above problems... auto headlights and dash lights all work HUD also still works

[beeman212]

I drove to work this morning and went out to break and everything was normal then when I went out to get in car for lunch all these things wouldn't work all of a sudden

[ddalder]

Although the battery is only three months old, I always diligently rule these out by properly load testing anyway. While it may be unlikely, "new" batteries have come back to bite people on occasion. Have you measured/monitored your system voltage? What type of scan tool did you use to check for codes? There may be some that your tool may not be able to pull.

[beeman212]

Voltage has been great between 13.8 on full load and 14.8 on startup and 14.4 or so normally...
I don't see a battery caused all these problems yet I can still drive car and everything else works even a/c and all pwr windows and mirrors work..
Its something to do with pwr sunroof.. pwr locks .. interior lights and trunk release ...

[ddalder]

You may be surprised all of the erroneous and widespread problems a bad battery or charging system can cause. If that is consistently your system voltage, likely the battery isn't your problem. Regardless, it (and fuses which you've checked) should always be an early consideration with multiple onset faults.

Next you need to consider what component(s), connectors, grounds and other items are common to these systems. Do you have schematics? Also keep in mind that you may actually have more than one legitimate problem that are not related but occurred coincidentally at/near the same time.

[james1965]

Just for kicks did ya pull the back seat out, look at the wire harness around the battery. Mice/rodents can get in there and wreak havok.

[beeman212]

I've had all Capet and seats removed in march and cleaned up allgrounds and did the splices for power windows and pwr locks under driver seat area... so I don't think its that... only ground I didn't clean was one on transmission

[beeman212]

Checked all grounds and all good... under hood
My sunroof is in vent position any ideas on how to manually power up to shut sunroof cause its gonna rain all week

[ddalder]

I'm assuming you realize that every one of these "black boxes" bolted to the body is a splice pack and grounds every one of the wires connected to it? They are located all throughout the car. It is possible that corrosion "may" exist inside these which is why it's important to consider common grounds.

[beeman212]

Right... I've had all the ones under hood under carpet under kick panels under backseat all unbolted and checked and no corrosion on any of them but took a wire brush and dielectric grease to all of them... I just checked the ones on the transmission today and no change... also no power at cigarette lighters either

[ddalder]

So just to clarify, the following is an accurate summary of current problems...

- Sunroof will not operate at all. Stuck in 'Vent' position.
- Map lights, visor vanity lights, all other interior 'courtesy lamps' do not work. All instrument panel and control backlighting works.
- None of the power door lock solenoids work to either lock or unlock the doors. This started with the LR door and progressed to all of them.
- On one occasion, the stereo failed to power up immediately after starting the car. This has not been a problem since.
- Neither of the 12VDC outlets in the vehicle works (dash or rear of center console).
- The trunk release does not work with either the fob or switch in the glove box.

All other functions of the car work properly. Is this correct?

[beeman212]

Yup... driver rear door lock quit working like July 6th and then all this happened yesterday...but yea you got the list perfect...
Anyone have any ideas..
Only manual I have is a garbage Hayes manual... haven't been able to find a good one at a decent price...
One more thing to my list of things fixed or need fixed...
Not sure if it matters but my fog lights haven't worked since I got the car in Feb 2015... prob not part of the issue but more info the better.....
Please help I'm going crazy trying to get this car right and I already have 5 grand in the car and another grand in stereo

[ddalder]

When was the stereo installed, who did the work and did everything work correctly before this?

There is very little common amongst all the problems you've listed. Without sifting through all the manuals and diagrams, the only thing that seems to have some commonality between a few of the problems relates to Retained Accessory Power. Remote troubleshooting (ie: over the internet) is very difficult to begin with. When you factor in that someone has altered what GM has done, this can become exponentially more complex. It's hard to say if someone tapped incorrectly into a circuit for stereo power, cut a wire, a wire was routed incorrectly and has chaffed through or if it's simply a coincidental misfortune of OEM faults.

[beeman212]

I installed the whole stereo myself I've been installing car audio for 15+ years so I'm positive its done correctly...
I even did all the research on here before I started...
Factory radio was locked so I bought the GMOs adapter and everything works radio wise....

[beeman212]

Do u think my rear integration module could be bad and causing this problem?

[ddalder]

The issue is that you have multiple problems, and I don't see that they are all directly linked back to the RIM. Having said this, I also haven't (recently) looked at the schematics for all of the systems you have reported failures with. A Tech2 would certainly offer some diagnostic capabilities and insight. In the absence of this, good old troubleshooting techniques can be used to improve your suspicion about what's going on.

At this point, I'd suggest you pick ONE of the problems and try to tackle it. As you work through the schematics and complete systematic diagnostic testing, a couple of things may happen. You may find an isolated fault with that system and are able to repair the problem, or you may work through the fault and find something that is common to all the faults you have discovered.

Personally, I HATE throwing parts at a problem. You can spend a lot of time and money only to be disappointed. Nothing replaces proper troubleshooting.

Could you have a problem with your RIM? Perhaps, but swapping it wouldn't be my first action. Purchase the manuals for the car, or an online subscription through one of the multiple sources so that you have the necessary technical information and go from there. You never answered the question about whether there were any problems prior to the stereo install. It's also possible that you have a bad aftermarket module. I'd try eliminating the stereo and components as possible factors early in this game.

[beeman212]

So just noticed my reverse lights no longer work either...
I'm gonna look online for some wiring diagrams due to my lack of money due to my bonnie.....
I'm gonna start in the trunk due to my large subwoofer in trunk may have caused something to come loose...
I have a 5 cubic ft box with a 1500 watt kicker 15 in the trunk so I'm gonna start with that and the DVD player in the dash next.....
Thx for the support....