2006 Suburban Sunroof Won't Open

[Twodogs]

2006 Suburban out of warranty and the sunroof won't move. At least it's closed!! I've searched the site and there seems to be several with sunroofs that won't close or "get stuck" somewhere in the travel. I didn't see anything pertaining to any not working at all. I obtained a GM Diagnostic Information and Reinitialization Procedures for Sunroof Will Not CLose Condition #05-08-67-002A . This procedure did nothing. Is there any way to test the sunroof switch and/or the Control Module? Is the Control Module the actual sunroof motor??

[minibike132]

Is there any way to test the sunroof switch and/or the Control Module? Is the Control Module the actual sunroof motor??

 

I'm going to answer this backwords. You can get the motor and the control module independant of eachother, lets figure out if you need either one. I'm going to make some assumptions let me know if any of them are wrong.

• This is definately a GM sunroof and not an aftermarket

   

• You have power windows and they work

   

• Your courtosey (sp) lights work (this one isn't that important)

   

• You have a test light and are ready to drop the headliner in the front enough to access the module and motor (probably includes the visors and overhead console)

   

 

 

If your power windows and lights work you can eliminate the body control module, 3 fuses and 2 relays and we can move to the module and motor. For the record even if we can find out what the problem is when you replace a part you may need to time the motor correctly and that is difficult for me even when i'm looking at it, I'll never be able to walk you through it so you may need to have someone replace or time it for you but if you have a test light and some time I can help you figure out what it is and you can get an idea what it'll cost you.

[Twodogs]

First, thank you for the reply.

Yes to all your questions. I should have clarified more. It is the factory GM sunroof, I have power windows and they work along with the courtesy lights. I have check the fuses both under the hood and beside the dash, all are good. I already have the overhead console down and the switch is out. I can pull the A-pillar and the sun visor down and I believe the headliner will drop enough to get to the module. I have a test light & ohm meter. I take it that reinitializing and/or timing the motor are two different operations?

[Twodogs]

OK, the A-pillar is out and the sun visor, both brackets, on the driver side is out, along with the overhead console. I have pulled on the head liner and I can see wiring and the black box. I'm getting resistance from the headliner and don't won't to tweak or break it. I can only barely see the box but can't get to it just yet. I've also removed the trim from around the sunroof glass. Are there clips holding up the head liner or what else could be removed to free it up a little more?

[minibike132]

Sorry to take so long to get back to you, lots of snow lots of dead cars...Slow down we don't need to tear all that out yet. All these tests should be with ignition key on unless otherwise specified.

• Connect one side of test lamp to ground, Disconnect the switch and probe terminal F ( should be a dark green wire). It should light.
  
• If last step lit, connect a fused jumper wire between terminal F and terminal A (orange wire) for 3 seconds. Did the glass slide to vent?
  

 

If I read correctly the roof is in the full closed position currently. If so do these things to check the switch and get back to me.

[Twodogs]

Got a good ground with the test light, unplugged sunroof switch, key on, NO power to the GREEN wire in the switch harness plug. There is power to the YELLOW wire but that's it. I've made up a fused jumper wire for the next step, if needed.

[Twodogs]

OK, I got the SI's on Diagnostic Info and Reinitialization Procedures for a Sunroof Will Not Close Condition, Power Sunroof Inoperative, and RAP Inoperative. Evidentally the GREEN wire is NOT the RAP wire. I have power to the YELLOW wire with the key on and when the key is turned off and you open the door I loose power to the YELLOW wire. With that, the YELLOW wire must be the RAP wire. With a fused jumper to the YELLOW wire and the key on (door shut) I made contact with the BROWN and the Orange wired pins in the plug. Sunroof did not move to either the vent or open position.

 

Are my diagnostics correct and if so, what would be my next move? Thanks in advance!!

[Twodogs]

I have now jumped from the YELLOW wire to both the open & close circuit pins in the harness plug with no movement from any of these. Starting to look like an actuator module?? Where exactly is the actuator module? I see the drain tubes on the front of the left and right side. I've now got both sunvisors down along with the grab handle on the passengers side. I see another harness connection in front of the glass but can't tell where it goes.

[minibike132]

You have the SI document, good that'll make this easier. The yellow wire is for the lighting, that is controlled by the body control module and turns off for the same reasons the rap may, however the lighting circuit carries very low amperage, the rap circuit for the sunroof carries alot more. You need voltage on the green wire.

 

Also OOOPPPSSS. In my first post I was looking at a 2001 diagram. Same colors different results. You checked the sunroof fuse in the underhood fuse block right. We need power to that green wire but that doesn't mean thats the only problem. Gotta start with the right voltage to the switch first.

[Twodogs]

Yes, I have double checked the fuses under the hood (#7 or #8 depending on some code but they're both good). The RAP relay is behind the passenger side kick panel. I have checked RAP on the radio and interior lights and it works fine. Should I check the RAP relay? Is the RAP circuit split up or does it provide power to everything at once?

[minibike132]

There is a sunroof relay in the passenger kick panel you need to check that next.

[Twodogs]

I removed the passenger kick panel and there are 3 different plugs. What looks to be the relay is a gray box with a 4 pin relay inside when unplugged. I attached some pics of the relay?? with the other plugs in the background. Take a look and see if you think this is it. I have power to the ORANGE and BLUE wires that plug into the relay. There seems to be a residue of water (possible leak from the windshield that I've been trying to track down for a while). I cleaned the pins but still no power to GREEN wire at the sunroof switch. I don't know how to check the relay so I guess the next move would be to order a new one tomorrow and go from there. See what you think if you can make out the pics.

[minibike132]

I only see one relay over there but that doesn't mean anything. The schematic shows 2 black wires, a dark blue wire and an orange wire, is that what you have there? You do have power to both blue and orange wire is that what you said.

[minibike132]

[minibike132]

Do you see the relay to the left middle of the picture here? There should be a picture just like it on the side of the relay telling which pin is which. On the relay you want to find the pins that corrospond to C1 and A2. Check for power at the C2 no power bad relay, power good relay. You can also run a fused jumper wire between the 2 pins from the back side if you can and try the window. This will take the relay out of play. If it works do not leave it that way go get a relay before using it again.